RDM1L series moulded case circuit breaker, is mainly applied to the distribution circuit of AC50/60Hz, rated working voltage is 400V, rated current up to 800A for providing protection indirectly and prevent the fire caused by the fault grounding current, and it also can be used for power distribution and circuit protection against overload and short-circuit, it also works for transferring circuit and starting motor infrequently.
This product is suitable for isolating.
This product is applied to standard of IEC 60947-2.
Main technical parameter
4.1 Ui=690V, Uimp=8kV, the main technical parameter see Table3.
| Model No. | Rated current ln (A) | Rated operational voltage (V) | Rated short-circuit breaking capacity R | Rated residual short circuit making and breaking capacity lm (A) | Rated residual action current In(mA) | Arc distance mm | |
| lcu (kA) | lc (skA) | ||||||
| RDM1L-125L | 10 16 20 25 32 40 50 63 80 100 |
400 | 35 | 22 | 25%lcu | 30/100/300 No delay type 100/300/500 delay type |
≤50 |
| RDM1L-125M | 50 | 35 | |||||
| RDM1L-125H | 85 | 50 | |||||
| RDM1L-250L | 100、125、160、180、200、225 | 400 | 35 | 22 | 25%lcu | 100/300/500 | ≤50 |
| RDM1L-250M | 50 | 35 | |||||
| RDM1L-250H | 85 | 50 | |||||
| RDM1L-400L | 225、250、315、350、400 | 400 | 50 | 25 | 25%lcu | 100/300/500 | ≤50 |
| RDM1L-400M | 65 | 35 | |||||
| RDM1L-400H | 100 | 50 | |||||
| RDM1L-800L | 400、500、630、700、800 | 400 | 50 | 25 | 25%lcu | 300/500/1000 | ≤50 |
| RDM1L-800M | 70 | 35 | |||||
| RDM1L-800H | 100 | 50 | |||||
4.2 Circuit breaker residual current action protection time see Table4
| Residual current | l△n | 2I△n | 5I△n | 10I △n | |
| Non-delay type | Max breaking time (s) | 0.3 | 0.15 | 0.04 | 0.04 |
| Delay type | Max breaking time (s) | 0.4/1.0 | 0.3/1.0 | 0.2/0.9 | 0.2/0.9 |
| Limited undrive time t (s) | - | 0.1/0.5 | - | - | |
4.3 Overload release consists of the thermal long-delay release which has inverse-time characteristic and instantanous action release, the action feature see Table5
| Power-Distribution circuit breaker | Motor-protection circuit breaker | ||||||
| Rated current ln (A) | Thermal release | Rated current ln (A) | Thermal release | electromagnetic release action current | |||
| 1.05ln (cool state) Non-action time (h) |
1.30ln (heat state) Action time (h) |
electromagneticrelease action current | 1.0 ln (cool state) non-action time (h) | 1.20ln (heat state) action time (h) |
|||
| 10≤ln≤63 | 1 | 1 | 10ln±20% | 10≤ln≤630 | 2 | 2 | 12ln±20% |
| 63＜ln≤l00 | 2 | 2 | |||||
| 100＜ln≤800 | 2 | 2 | 5ln±20% 10ln±20% | ||||
4.4 Accessory device technical parameter
4.4.1 Auxiliary contact and alarm contact rated value, see Table 6
| Contact | Frame size rated current | conventional heating current lth (A) | Rated operation current le (A) | |
| AC400V | DC220V | |||
| Auxiliary contact | lnm≤225 | 3 | 0.3 | 0.15 |
| lnm≥400 | 3 | 0.4 | 0.15 | |
| Alarm contact | 100≤lnm≤630 | 3 | 0.3 | 0.15 |
4.4.2 Control circuit release and motor rated control power voltage (Us) and rated operational voltage (Ue) See Table7.
| Type | Rated voltage (V) | |||
| AC 50Hz | DC | |||
| Release | shunt release | Us | 230 400 | 24 110 220 |
| undervoltage release | Ue | 230 400 | ||
| motor mechanism | Us | 230 400 | 110 220 | |
4.4.2.1 Shunt release external voltage is between rated control power voltage 70%~110%, it can tripping the release reliably.
4.4.2.2 When power supply voltage decrease to 70% to 35% under-voltage rated operating voltage, under-voltage release can breaking the line. When the power supply voltage is higher than 85% of under-voltage release rated operating voltage, the under-voltage release will that circuit breaker close. Warning: Under-voltage release must be charged at first, then circuit breaker closed. If not, the circuit breaker would be damaged.
4.4.2.3 Motor operation mechanism ensure that it can make the circuit breaker closed when the power voltage is between 85% -110%, under rated frequency.
4.4.3 Leakage alarming module (RDM1 L-125L, 250L do not have it.) Specification: P5-P6 port for input power-source AC50/60Hz, 230Vor 400V. P1 -P2, P3-P4 port for capacity is AC230V 5A, see Fig1
Note:
1. Mode II can meet special site requirements, users adopt this function after the consideration.
2. Circuit breaker with leakage alarming module, when the leakage alarming is happening, the leakage protection module would function after resetting the reset button of Module II.Fig1.
5.1 Appearance and Installation dimension see Fig2, Fig3 and Fig8.
| Model No. | Pole | Front board connection | Installation Dimension | ||||||||||
| L1 | L2 | W1 | W2 | W3 | H1 | H2 | H3 | K | a | b | Φ d | ||
| RDM1L-125L | 3 | 150 | 52 | 92 | 88 | 23 | 94 | 75 | 72 | 18 | 30 | 129 | Φ 4.5 |
| 4 | 150 | 52 | 122 | 88 | 23 | 94 | 75 | 72 | 18 | 60 | 129 | Φ 4.5 | |
| RDM1L-250L | 4 | 150 | 52 | 92 | 88 | 23 | 110 | 92 | 90 | 18 | 30 | 129 | Φ 4.5 |
| 3 | 150 | 52 | 122 | 88 | 23 | 110 | 92 | 90 | 18 | 60 | 129 | Φ 4.5 | |
| RDM1L-250M.H | 3 | 165 | 52 | 107 | 102 | 23 | 94 | 72 | 70 | 23 | 35 | 126 | Φ 5 |
| 3 | 165 | 62 | 142 | 102 | 23 | 94 | 72 | 70 | 23 | 70 | 126 | Φ 5 | |
| RDM1L-400 | 3 | 165 | 52 | 107 | 102 | 23 | 110 | 90 | 88 | 23 | 35 | 126 | Φ 5 |
| 4 | 165 | 62 | 142 | 102 | 23 | 110 | 90 | 88 | 23 | 70 | 126 | Φ 5 | |
| RDM1L-800 | 4 | 257 | 130 | 150 | 150 | 65 | 150 | 110 | 108 | 32 | 44 | 194 | Φ 7 |
| 4 | 257 | 92 | 198 | 142 | 65 | 150 | 110 | 108 | 32 | 44 | 194 | Φ 7 | |
| RDM1L-100M.H | 4 | 280 | 138 | 210 | 210 | 66 | 150 | 116 | 111 | 44 | 70 | 243 | Φ 7 |
| 3 | 280 | 92 | 280 | 182 | 67 | 150 | 116 | 111 | 44 | 70 | 243 | Φ 7 | |
