RDM5RT Series(MCCB)

The RDM5RT series circuit breakers have a rated insulation voltage of up to 800V.They are applicable to AC 50/60Hz distribution network circuits with a rated operating voltage of up to 690V and a rated operating current of up to 1250A.

These circuit breakers serve for electric power distribution,protect circuits and power supply equipment against damages resulting from faults including overload,short circuit and undervoltage.They can also be used for infrequent motor starting with the same protection functions.

Send email to us Download as PDF

Product Detail

Product Feature

● Standard

IEC/EN 60947-1(General) GB/T 14048.1
IEC/EN60947-2(Circuit-breakers) GB/T 14048.2
IEC/EN60947-3(Switches,Isolators) GB/T 14048.3
IEC/EN60947-4(Motors and drives) GB/T 14048.4

● Compact Design
The product features a compact design: for example, a 160-frame product has dimensions equivalent to the original 100-frame model, meeting customers specific requirements for installation dimensions.

● Uniform Dimensions
Within the same frame size, products with different breaking capacities (C,S, M. H) and different functions (air, ground fault, and adjustable thermomagnetic) have completely identical installation dimensions.

● Reasonable Setting of Functional Parameters
The circuit breaker allows for the adjustment of protection parameters such as long-time inverse-time overload protection and instantaneous short-circuit tripping. Users can independently configure the required protection characteristics, enabling more rational upstream and downstream configuration of circuit breakers in power distribution networks.

Normal Working Conditions and Installation Conditions

1.The product has passed environmental tests including dry cold, dry heat, and damp heat, ensuring reliable operation in non-standard environments.

2.The product meets the test requirements of GB/T 2423. 1 (Low-Temperature Testing of Electrical and Electronic Products) and GB/T 2423.2 (High-Temperature Testing of Electrical and Electronic Products), and can be used within a temperature range of -35°C to 70°C. When the temperature is below -5°C or above 40°C,calculations must be performed using the temperature compensation coefficient table provided in the catalog.

3.The normal operating altitude is 2000 m or below. At altitudes exceeding 2000 m, factors such as reduced dielectric strength and colder air must be considered; please apply corrections using the altitude-dependent derating factor table provided in the catalog.

4.The product can operate reliably in pollution degree 3 environments as defined by IEC/EN 60947-1 and IEC60664-1(industrial environments).

5.The product complies with the requirements of the IEC 60529/GB/T 4208 (Enclosure ProtectionRating)standard. Product body: Protection rating is IP30 (excluding terminal blocks).

6.It can be installed vertically (upright) or horizontally (sideways).

Selection Guide

Product Code	Adjustable Type	Frame Class	Breaking Capacity
RDM5	RT	160	C
Molded-case circuit breaker	RT stands for thermomagnetically adjustable T/A stands for single adjustable(i,e., thermally adjustable/magnetically ﬁxed(Fixed))			C	S	M	H
		160	160	25/15	35/25	50/35	/
		250	250	25/18	35/25	50/35	/
		630	630	/	35/25	50/35	70/50
		800	800	/	35/25	50/35	70/50

Operating Method	Poles	Trip Mechanism and Internal Components	Rated Current A
P	4	300	125A
P: Electric operation Z: Rotary handle W: Direct operation D: Electric operation DC1,DC2,Dc3	2:2-pole 3:3-pole 4:4-pole	The first digit indicates the trip mechanism type 2: Instantaneous trip only 3: Dual-stage trip unit Note: The last two digits are the accessory code(see attachment table).	160	32,40,50,63,80,100,125,140,160
			250	100,125,140,160,180,200,225,250
			630	250,315,350,400,500,630
			800	500,630,700,800

Application	Available Part Numbers For 4-pole Products
2	B
1 : For power distribution 2: For motor protection	A: N-pole without protection,cannot close or open A B: N-pole without protection,can be closed and opened

Accessory voltage			Motor operating voltage		Mounting method	Is a terminal block installed?
Q1			D1		Q	2
Undervoltage Trip Unit UVT	Shunt Trip Unit	Auxiliary Alarm	DC1	DC3	Q:Front of board H:Rear CQ:Plug-in front panel CH:Plug-in rear panel	Install 1:Do not install 2:Installed
			D1:AC 220V	D5:AC 230V
Q1:AC 220V	F1:AC 220V J1:Ac 125	J1:AC125V	D2:AC 230V	D6:AC 110V
Q2:AC 240V	F2:AC 380V	J2:AC 250V	D3:AC 380V	D7:DC 220
Q3:AC 380V	F3:DC 110 V	J3:DC 125V	D4:AC 400V	D8:DC 110
Q4:AC 415V	F4:DC 24V	J4:DC 24V		D9:AC 110-240 V
				D10:DC 100-220 V
			Note:When selecting electric operation,refer to the external accessories section.

Accessories

Model		RDM5T/A、RT-160	RDM5T/A、RT-250	RDM5T/A、RT-630	RDM5T/A、RT-800
Breaking Capacity		C,S,M	C,S,M	S,M,H	S,M,H
Pole		3,4	3,4	3,4	3,4
Attachment Code	Attachment Name
208,308	Alarm switch
210,310	Shunt Trip Unit
220,320	Auxiliary switch
230,330	Undervoltage release
240,340	Shunt trip unit and auxiliary switch
260,360	Two sets of auxiliary switches
270,370	Auxiliary switch,undervoltage trip unit
218,318	Shunt trip unit and alarm Switch
228,328	Auxiliary switch Alarm switch
238,338	Undervoltage trip unit alarm switch
248,348	Shunt trip unit,auxiliary switch,alarm switch
268,368	Two sets of auxiliary switches and alarm switches
278,378	Auxiliary switch undervoltage trip unit,alarm switch
280,380	Two sets of auxiliary switch shunt trip units

⚫Alarm Switch ◯Auxiliary Switch ⬜Shunt Trip ⬛Undervoltage Trip Unit

Note:
1. The company offers three new products-right auxiliary switch, left shunt, and left undervoltage-for customers to choose from.
2. For the 220,320,240,340,270, and 370 models, two sets of auxiliary switches are available;pleasespecify this when ordering.

Main Technical Parameters

Model			RDM5T/A、RT-160			RDM5T/A、RT-250
Frame rating rated current Inm(A)			160			250
Number of poles			3,4			3,4
Product Image
Rated Current In(A),40℃,50℃,55℃			63,80,100,125,160			125,140,160,180,200,225,250
Rated operating voltage Ue(V),AC 50/60 Hz			400/415			400/415
Rated insulation voltage Ui(V)			800			800
Rated impulse withstand voltage Uimp(kV)			8			8
Breaking capacity code			C	S	M	C	S	M
Short-circuit breaking capacity Icu/Ics (kA)AC 400/415 V			25/15	35/25	50/35	25/18	35/25	50/35
Selection Category			A	A	A	A	A	A
Trip Mechanism Types and Protection Classes	Electromagnetic trip Thermal-magnetic trip	Power ON	3000			3000
		Power Off	9000			9000
		Power Distribution Protection	⚫	⚫	⚫	⚫	⚫	⚫
		Motor protection	⚫	⚫	⚫	⚫	⚫	⚫
		Power Distribution Protection	⚫	⚫	⚫	⚫	⚫	⚫
		Motor protection	⚫	⚫	⚫	⚫	⚫	⚫
Accessories	Auxiliary Contacts		⚫	⚫	⚫	⚫	⚫	⚫
	Alarm Contacts		⚫	⚫	⚫	⚫	⚫	⚫
	Shunt Trip Unit		⚫	⚫	⚫	⚫	⚫	⚫
	Undervoltage trip		⚫	⚫	⚫	⚫	⚫	⚫
	Manual operating mechanism		⚫	⚫	⚫	⚫	⚫	⚫
	Electric operating mechanism		⚫	⚫	⚫	⚫	⚫	⚫
	Rear Panel Wiring		⚫	⚫	⚫	⚫	⚫	⚫
	Plug-in		⚫	⚫	⚫	⚫	⚫	⚫
	Connection plate		⚫	⚫	⚫	⚫	⚫	⚫
	Phase separator		⚫	⚫	⚫	⚫	⚫	⚫
Dimensions (mm) (a-b-c-ca)		3-pole (3P)	90-155-2017-95		90-155-84.9-109.2	105-165-71-95.8		105-165-93.4-118.6
		4-pole (4P)	120-155-70.7-95		120-155-84.9-109.2	140-165-71-95.8		140-165-93.4-118.6

Note:Add ● indicates optional accessories, add -indicates no optional accessories.

Model			RDM5T/A、RT-630			RDM5T/A、RT-800
Frame rating rated current Inm(A)			630			800
Number of poles			3,4			3,4
Product Image
Rated Current In(A),40℃,50℃,55℃			250,315,350,400,500,630			500,630,700,800
Rated operating voltage Ue(V),AC 50/60 Hz			400/415			400/415
Rated insulation voltage Ui(V)			800			800
Rated impulse withstand voltage Uimp(kV)			8			8
Breaking capacity code			S	M	H	S	M	H
Short-circuit breaking capacity Icu/Ics (kA)AC 400/415 V			35/25	50/35	75/50	35/25	50/35	75/50
Selection Category			A	A	A	A	A	A
Number ofoperating cycles Trip Mechanism Types and Protection Classes	Electromagnetic trip Thermal-magnetic trip	Power ON	3000			3000
		Power Off	9000			9000
		Power Distribution Protection	⚫	⚫	⚫	⚫	⚫	⚫
		Motor protection	⚫	⚫	⚫	⚫	⚫	⚫
		Power Distribution Protection	⚫	⚫	⚫	⚫	⚫	⚫
		Motor protection	⚫	⚫	⚫	⚫	⚫	⚫
Accessories	Auxiliary Contacts		⚫	⚫	⚫	⚫	⚫	⚫
	Alarm Contacts		⚫	⚫	⚫	⚫	⚫	⚫
	Shunt Trip Unit		⚫	⚫	⚫	⚫	⚫	⚫
	Undervoltage trip		⚫	⚫	⚫	⚫	⚫	⚫
	Manual operating mechanism		⚫	⚫	⚫	⚫	⚫	⚫
	Electric operating mechanism		⚫	⚫	⚫	⚫	⚫	⚫
	Rear Panel Wiring		⚫	⚫	⚫	⚫	⚫	⚫
	Plug-in		⚫	⚫	⚫	⚫	⚫	⚫
	Connection plate		⚫	⚫	⚫	⚫	⚫	⚫
	Phase separator		⚫	⚫	⚫	⚫	⚫	⚫
Dimensions(mm) (a-b-c-ca)		3-pole (3P)	140-257-107.5-156			210-275-114.3-162.5
		4-pole (4P)	185-257-107.5-156			280-275-114.3-162.5

Note:Add ● indicates optional accessories, add -indicates no optional accessories.

Operating Characteristics

1.The inverse-time operating characteristics of distribution circuit breakers with no humidity compensation.

When all poles are energized simultaneously at an ambient air temperature of +40°C , are shown in the table below:

Test Current Name	Setting current multiplier	Conventional Time	Initial State
		In≤63 In>63
Agreed non-trip current	1.05	≥ 1h ≥ 2h	Cold state
Rated tripping current	1.3	＜1h ＜2h	Hot state

2.For motor protection circuit breakers,the inverse-time operating characteristics (without humidity compensation)

When all poles are energized simultaneously at an ambient air temperature of +40°C are shown in the table below:

Test Current Name	Setting current multiplier	Speciﬁed Time	Initial State
		In≤800
Agreed non-trip current	1.0	≥ 2h	Cold state
Rated tripping current	1.2	＜2h	Hot state

3.Operating characteristics under short-circuit conditions:

The short-circuit current setting of the instantaneous trip unit for distribution circuit breakers is 10 In;

For circuit breakers used for motor protection , the short-circuit current setting of the instantaneous trip unit is 12In;

The accuracy of the short-circuit current setting for the instantaneous trip unit is ±20%.

Operating Characteristic Curve

RDM5T/A、RT-160 Operating Characteristic Curve

RDM5T/A、RT-250 Operating Characteristics Curve

RDM5T/A、RT-630 Operating Characteristics Curve

RDM5T/A、RT-800 Operating Characteristics Curve

External Dimensions and Installation Dimensions

Molded Case Circuit Breaker	Overall Dimensions																					Installation Dimensions		Bolt
	A		A1		A2		A3		B	B1	B2	B3	B5	B6	H	H1	H2	H3	H4	H5	H6	A4	B4
	3P	4P	3P	4P	3P	4P	3P	4P	B	B1	B2	B3	B5	B6	H	H1	H2	H3	H4	H5	H6	A4	B4
RDM5 RT-160CS	90	120	60	90	-	-	-	-	155	134	103	50	48	-	95	76	2.2	70.7	62.3	23.8	24.6	30	132	M8
RDM5 RT-160M	90	120	60	90	-	-	-	-	155	134	103	50	48	-	109.2	90	2.2	84.9	76.4	23.1	24.9	30	132	M8
RDM5 RT-250CS	105	140	70	105	-	-	-	-	165	144	102	50	97	-	95.8	75	2.8	71	62.2	22.7	23.3	35	126	M8
RDM5 RT-250M	105	140	70	105	-	-	-	-	165	144	102	50	95	-	118.6	97.6	2.8	93.4	84.5	23.1	23.2	35	126	M8
RDM5RT-630 SMH 400A	140	185	88	132	140	196	112	168	257	230	179	90	103	42	156	112.1	3.5	107.5	99.6	30.9	32	44	194	M10
RDM5RT-630 SMH 630A	140	185	88	132	140	196	112	168	257	230	179	90	103	42	156	112.1	3.5	107.5	99.6	33.4	34	44	194	M10
RDM5RT-800 SMH 630A	210	280	140	210	180	250	140	210	275	243	192	90	103	87	162.5	118.4	2.7	114.3	106	28.5	30.7	70	242.5	M12
RDM5RT-800 SMH 800A	210	280	140	210	180	250	140	210	275	243	192	90	103	87	162.5	118.4	2.7	114.3	106	29.5	32.7	70	242.5	M12
RDM5RT-1250SMH	210	280	140	210	180	250	140	210	275	243	192	90	103	87	162.5	118.4	2.7	114.3	106	31.5	34.7	70	242.5	M10