RDM1E Series (MCCB)

The RDM1E series electronic moulded case circuit breaker is a newly designed product independently developed and manufactured by adopting international advanced technologies. With a rated insulation voltage of 800V, it is applicable to AC 50Hz circuits,rated working voltage of 400V,rated current up to 1250A.
It serves as an infrequent switching device and motor starting component, integrating multiple protection functions including overload long-delay inverse time limit, short-circuit short-delay inverse time limit, short-circuit short-delay definite time limit, short-circuit instantaneous protection, and under-voltage protection. These functions effectively safeguard circuits and power equipment from damage.

It has the characteristics of small volume, high breaking capacity, short arcing distance, and anti-vibration.
It cannot be inverted wiring, only can be 1, 3, 5 connect to the power line, 2, 4, 6 connect to the load line.


  • RDM1E Series (MCCB)
  • RDM1E Series (MCCB)
  • RDM1E Series (MCCB)
  • RDM1E Series (MCCB)
  • RDM1E Series (MCCB)

Product Detail

Normal Working Condition and Installation Environment

1.Altitude of installation location no more than 2000m

2.Temperature: -5°C~+40°C, and the average temperature within 24h no higher than +35°C

3.The relative humidity: no more than 50%, when temperature is +40°c. The product can allow the higher humidity under lower temperature, for instance, when the humidity reaches to 90% when it is at +20°C.

4.Class of pollution: class 3

5. Installation type of main circuit: class Ⅲ, installation type of auxiliary circuit and control circuit: class Ⅱ

6.Using category: A or B

Main Function Characteristics

The intelligent controller is the key component of the MCCB, it is used in motor or power distribution protection to realize the integration of measurement, protection, control and communication functions, so that the circuit and power supply equipment are protected from overload, short circuit, grounding and other fault hazards.Using intelligent MCU micro-processing controller, stable and reliable, can provide power, as long as one phase is connected, when the current is not lower than 20% of its rated value, it can ensure the normal operation of the protection function.Selective cooperation with three-stage protection:

1.The circuit breaker of category B has the selective cooperation if it is connected with other short-circuit protection device in the same circuit under short-circuit conditions;

2.Adjustment of protection function parameters such as overload delay, reverse delay, short circuit delay (reverse delay, fixed delay), short circuit instantaneous, etc.;

3.It has three parameter settings of operating current and operating time, and can be adjusted in 4-10 gears: the user can set and adjust the controller according to the load current requirements, and the corresponding function can be turned off according to the user's requirements:

Instantaneous tripping function of high current:when the circuit breaker is closed and running, if a short circuit and high current (20Inm) are encountered, the magnetic tripping mechanism of the circuit breaker can be tripped directly, and the double protection is more reliable and safe.

Tripping test function:input DC12V voltage to test the operating characteristics of the circuit breaker;

Fault self-diagnosis function: protect and detect the working status and operating conditions of the intelligent controller itself;

Pre-warning indication and overload indication function: when the load current reaches or exceeds the set value, the light source of the luminous column is exported;

Dual air gap technology of magnetic flux converter: more reliable and stable operation, eliminating malfunction, reliable tripping, and low power;

High protection accuracy: overload protection, short circuit, short delay protection, action accuracy of ±10%;

short circuit instantaneous protection value accuracy of ±15% depends on the operating current;

The installation is interchangeable: the dimensions and installation dimensions are the same as the RDM1 series MCCB with the same specifications and dimensions.

Optional functions

1.There is a temperalure monitoring and protection funcion:when the ambient temperature exceeds the set vale (the defaut seting is 85℃), the controler wi outlput an alarm photoelectric signal or make the circuit breaker switch off;

2.Dual passive signal output function: for signaling (or alarm), capacity AC230V5A;

3.It has overload thermal memory function: overload thermal memory function, short circuit (short delay) thermal memory function;

4.With fire-fighting excitation function:overload alarm is not tripped(a pair of passive contacts are provided)and the excitation tripping function or communication function is provided;

5.With communication functions: standard RS232,RS485, Modbus fieldbus protocols

Protection

1.Overload long delay action ammeter lR adjustment, depending on different rated current of the circuit breaker, can be adjusted from 4 to 10 steps;

2.Long delay action time TR adjustment, adjustable in 4 steps;

3.Short-circuit short delay action current Isd adjustment, adjustable in 10 steps.

4.Short delay action time tsd adjustment, adjustable in 4 steps;

5.Short-circuit instantaneous action ammeter li adjustment, adjustable in 8, 9, or 10 steps

6.Pre-alarm action current lp adjustment, adjustable in 7 steps.

Other functions

1.A test terminal for checking the current setting value of the electronic release(or release test).

2.Running indication;

3.Pre-alarming indication;

4.Release button

Main Technical Specification

Model RDM1E-125 RDM1E-250 RDM1E-400 RDM1E-630 RDM1E-800
Frame current Inn(A) 125 250 400 630 800
Breaking capacity class M H M H M H M H M H
Rated current In(A) 32、63、100 250 400 630 630、800
Pole 3、4 3、4 3、4 3 3、4
Rated voltage Ue(V) AC400
Rated insulated voltage Ui(V) 800
Rated impulse withstand voltage(V) 8000
Rated limited short-circuit breaking capacity Icu(KA) 35 50 35 50 50 70 50 70 50 70
Rated working short-circuit breaking capacity Ics(KA) 25 35 25 35 35 50 35 50 35 50
Rated short time withstand current Icw 1S(KA) 5 5 5 10 10
Using category B B B B B
Arc distance(mm) ≤50 ≤50 ≤100 ≤100 ≤100
Operation performance Power on(Times) 1500 1000 1000 1000 500
Power off(Times) 8500 7000 4000 4000 3000
Front plate wiring
Back plate wiring
Plug-in wiring
Drawer wiring - -
Under voltage release
Shunt release
Auxiliary contact
Alarm contact
Motor operation mechanism
Manual operation mechanism
Hand test device
Intelligent control module
Test power module
LCD display module

Appearance and Installation Dimension

Appearance dimension as Fig.2, Fig.3, Fig.4, Fig. 5, Fig. 6 and table 1

①Front of board wiring appearance dimension as Fig. 2 (X-X,Y-Y is the center of 3P circuit breaker

②Rear wiring appearance dimension as Fig. 3, Fig.4

③Plug-in front of board wiring appearance dimension as Fig. 5

④Plug-in rear wiring appearance dimension as Fig. 6

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Model(Table 1) Front of board wiring
W W1 L L1 L2 L3 H H1 H2 H3 H4 E F G W2
RDM1E-125 92 60 150 100 132 88.5 93 112 29 29 12 50 22 18 122
RDM1E-250 107 70 165 132 144 102 90 110 24 24 5 62 22 22 142
RDM1E-400 150 96 257 220 224 175 107 147 38 38.5 5 89 65 33 198
RDM1E-630 150 96 257 220 224 175 107 147 40 41.5 5 89 65 33 -
RDM1E-800 210 140 280 240 243 205 116 155 42 45 4 81.5 66.5 44 280
Model(Table 1) Rear of board wiring Plug-in wiring
L4 H5 H6 H7 M1 d t L6 H8 H9 H10 H11 M1 M2 L7 L8
RDM1E-125 164 53 93 35 M8 168 50 64 76 18 M8 M6 220 250
RDM1E-250 173 55 100 35 M10 8.5 186 50 72 87 18 M8 M6 252 276
RDM1E-400 267 46 83 37 M12 12 8.5 280 60 84 107 21 M10 M8 357 387
RDM1E-630 295 46 83 M12 12 8.5 280 60 84 107 21 M10 M8 357 387
RDM1E-800 295 47 87 M16 16 16 305 61 97 148 16 M12 M8

Installation board hole-opening dimensions

①See Figure 7 for front of board wiring installation board hole-opening dimensions (X-X, Y-Y are three-pole circuit breaker centers)

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Model RDM1E-125 RDM1E-250 RDM1E-400/630 RDM1E-800
Number of pole 3 4 3 4 3 4 3 4
Installation board hole opening dimension (mm) A 30 35 70 44 70
B 129 126 194 243
d 4.5 4.5 7 7

②See Figure 8 for rear wiring installation board hole-opening dimensions (X-X, Y-Y are three-pole circuit breaker centers)

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Model RDM1E-125 RDM1E-250 RDM1E-400/630 RDM1E-800
Number of pole 3 4 3 4 3 4 3 4
Installation board holeopening dimension (mm) A 60 70 96 140
A1 90 105 144 210
B 72 87 124 178
B1 102 122 172 248
C 90 93 164 158
D 132 144 224 243
φ1 22 24 32 48
φ2 5.5 5.5 6.5 7

③See Figure 9 for plug-in front of plate wiring mounting plate opening dimensions (X-X, Y-Y are 3 pole circuit breaker centers)

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Model RDM1E-125 RDM1E-250 RDM1E-400/630
Number of pole 3 3 3
Installation board hole opening dimension (mm) A 94 110 152
B 60 70 60
C 56 54 129
D 41 66 65
E 90 91 166
d 6.5 6.5 8.5

④See Figure 10 for plug-in rear wiring installation board hole-opening dimensions (X-X, Y-Y are three-pole circuit breaker centers)

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Model RDM1E-125 RDM1E-250 RDM1E-400/630 RDM1E-800
Number of pole 3 4 3 4 3 4 3 4
Installation board hole opening dimension (mm) A 94 107 149 210
A1 129 145 200 290
B 60 70 60 90
B1 90 105 108 162
C 56 54 129 146
D 38 45.5 54.5 72
E 92 95 171 181
D 6.5 6.5 8.2 11

Communication functions of circuit breakers

RDM1E intelligent circuit breaker with electric operating mechanism is connected with the upper computer(such as computer), and can realize remote"four remote" function through the communication interface. RS485 interface, Modbus-RTU protocol, communication baud rate 9600K. In addition, with the addition of the RDM1E circuit breaker controller (optional), the parameters of the circuit breaker can be read and modified directly on site.

Communication interfaces and external modules for intelligent circuit breakers

RDM1E series inteligent molded case circuit breakers are equipped with communication interace and MODBUS communication protocol. RDM1E is not used for network communication, but when they are used individually, the hand-held programmer can perform operations such as setting of protection characteristics on the circuit breakers. f RDM1E is used for network communication, they can be directly connected to the corresponding field bus;

Communication network of RDM1E series communicable intelligent molded case circuit breaker

The communication network can be connected by referring to the following scheme. Different protocol modules can be selected for different
prbtocols to convert MOBBUS to PROFIBU S-DP and other protbcols.

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Alarm non-release module

When the product is used in fire fighting circuit,the controller is required to be alarmed for non-release function, at this time, it is necessary to confiqure the overload alarm non-release module to protect the continuity of power supply and meet the requirements of GB50054 Article 6.3.6.

The module can monitor the parameter selling of circuit breaker through communication function, remote communication to open the main circuit, output alarm signal(provide pair of passive contacts) when overload in the circuit, etc, It can be used for centralized control and management of electric power department and electric power users.

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Intelligent Circuit Breaker Communication Shunti Module

It can be used for monitoring the on-site operating parameters of intelligent circuit breaker to replace the meter display function, automatic remote communication to open the main circuit, and at the same time provide auxiliary working power to the intelligent circuit breaker. The green light is always on when the working power of the module is turned on, and the green light flashes during normal communication.

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Intelligent Circuit Breaker Shunt Module

It can be used to cooperate with intelligent circuit breakers, automatic remote communication to open the main circuit, and can provide the working power supply voltage of AC230V,AC400V,DC24V.

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Four-remote communication module

The controller has a communication funcion, need to cooperate with the corresponding accessories to realize the function (communication modulethickness size of 25mm). The parameters of communication characteristics are as follows;

Interface: external communication accessory of the controller, the accessory is a standard RS485 interface;

Baud rate (bps): 9600 by default, the remote control can be set in the range of 2400,4800, 9600, 19200, 38400;

Communication Format: Data Bit: 8; Checksum: even; Stop Bit: 1;

Communication Protocol: Modbus RTU,Slave Mode;

Device address:10 (default); Remote control settable range 1~255.

No. Name 10p Accessory Function Rated supply voltage (range) Rated control signal voltage (range)
1 Four Remote
Accessory
Four Remote
Communication+
Repeat Keys+
Working Indicator
DC24V(85%-110%)) Status signal DC24V(85%-110%)
Electrical operation signal DC24V
AC230V(85%-110% Status signal AC230V (85%-110%)
Electrical operation signal AC230V
Remarks Reset button function: press and hold for 5s; parameters such as communication baud rate and communication address are restored to factory values.
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Internal Accessories for Circuit Breakers

Shunt release

The rated control power supply voltage of the shunt release is AC50Hz, 230V,400v;DC24v,the circuit breaker can be reliably tripped under 85% of the rated control power supply voltage, the user wiring diagram is shown in the following figure.

RDM1E

Note:  K: The micro-switch inside the shunt release in series with the coil is a normally closed contact, which opens its own when the circuit breaker is tripped and closes when the circuit breaker is closed.

Undervoltage release

When the voltage drops (even slowly )to the rated voltage within the range of 70%-35%,the undervoltage release should be operated;when it is lower than 35% of the rated voltage of the release,the undervoltage release should be able to prevent the circuit breaker from closing; when the supply voltage is equal to or greater than 85%, the undervoltage release should be able to ensure that the circuit breaker can be closed reliably.According to the user's needs, the circuit breaker accessories can be directly led out or installed terminal block, the user wiring see the following figure.

RDM1E-1

The figure on the left is External Undervoltage Module Wiring Diagram(dashed box shows internal circuit breaker wiring diagram)

WARNING: The undervoltage release must be energized before the circuit breaker can be re-triggered and closed, otherwise the circuit breaker will be damaged!

Auxiliary contact

The auxiiary contacts of the circuit breaker are divided into two groups, each of which is electrically inseparable. User wiring is shown in the
diagram below.

When the circuit breaker is at the Position of “open”
 5 Shell frame class current 400A and above circuit breaker
 6 Shell frame class current 400A and below circuit breaker

Alarm contact

The alarm contacts are inactive during normal closing and breaking of the circuit breaker, and the contacts change their original position only after
free release or fault tripping

Diagram
When the circuit breaker is at the Position "close" of "open"  565655

External Accessories for Circuit Breakers

Motorized operating mechanism

The wiring diagram of the motorized operating mechanism is shown below (the internal wiring diagram of the motorized operating mechanism is shown in the dotted box)

The operating current, power and life of the electric operating mechanism are shown in the table below.

Circuit breaker for matching use Operating current (A) Motor power (W) Lifespan (times)
RDM1E-125 ≤0.5 14 10000
RDM1E-250 ≤0.5 14 8000
RDM1E-400/630 ≤2 35 5000
RDM1E-800 ≤2 35 5000

The height of the motorized operating mechanism is shown in the chart below.

RDM1E-2

● Voltage specification: AC 50Hz 110V,230V        DC110V,220V power input

● Conforms to the description: SB1, SB2 operation buttons(user-provided)
X terminal block 
P1, P2 is external power input

● NOTE: After the circuit breaker has tripped off, the motorized operating mechanism must first re-couple the circuit breaker before it can close the circuit breaker.

Rotation manual operating mechanism (common to three-pole and four-pole circuit breakers)

Mechanism is dedicated to RDM1E series molded circuit breakers, through the rotation of the handle to achieve the circuit breaker closing.This opening and reclosing and drawer cabinets, distrilbution cabinets, power boxes, etc.in the panel operation requirements, and to ensure that the circuit breaker is in the closed circuit breaker cabinet door can not be opened(i.e., interlocked with the door).Its external dimensions are shown in the following figure and table.

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Circuit breaker for matching use A(mm) B(mm) H(mm)
RDM1E-125 104 30 49
RDM1E-250 143 35 55
RDM1E-400/630 194 138 74
RDM1E-800 243 198 66

Rotation manual operating mechanism

Handle manual operating mechanism can be equipped with two kinds of operating handle: one for the "F" type square handle; the other for the "A'type round handle, the size of its door opening see the figure below. Turning the handle characteristics of the manual operating mechanism:

● The cabinet door cannot be opened when the circuit breaker is in the closed state.

● If the operating handle or manual operating mechanism is faulty in the closed state,the cabinet door can be opened by means of the emergency touch-lock device on the operating handle.

● Corresponding to different specifications of the manual operating mechanism,the matching manual operating handle, the door plate opening is consistent.

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Matching circuit breaker type H(mm)
RDM1E-125 94
RDM1E-250 90
RDM1E-400/630 145
RDM1E-800 147
55

"F" type square handle profile cabinet door opening size (opening center distance from the hinge is not less than 100mm)

RDM1E

L size:RDM1E-125 is 65,RDM1E-250 is 95,RDM1E-400 is 125

"A" type round handle profile cabinet door opening size (the center of the opening from the hinge distance is not less than 100mm)

Note:

● Square shaft length D=150mm (default), length not greater than 150mm, in 50mm steps increments, the longest can provide 500mm,to order specify

● If the manual operating mechanism is equipped with "F" type handle, add "F", if it is equipped with "A" type handle, add "A".Such as CZE-100-F.lf it is not specified, the default is A type.

● Manual operating mechanisms must be ordered from our factory as a complete set o ensure product qually. If users purchase them by themselves,our factory will not be responsible for any adverse consequences that occur after installation and assembly.

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