Siemens 3WL1212-4CB35-4AN2 Withdrawable Circuit Breaker 1250A
Siemens 3-pole, 1250A withdrawable air circuit breaker.
The Siemens 3WL1212-4CB35-4AN2 is a 3-pole, withdrawable air circuit breaker in size II, designed for IEC standards up to 690V AC (50/60Hz). It features an interrupting capacity (Icu) of 100kA at 500V and comes with a rear horizontal connection. The integrated overcurrent release is an ETU 25 LSI, offering adjustable protection from 0.4 to 1. This breaker includes a motorized operating mechanism with a spring charging motor suitable for AC 50/60 Hz (208-240V) or DC (220-250V), and activation for AC 50/60 Hz (230V) or DC (220V). It is equipped with a 2nd auxiliary release 'R' and an undervoltage release for instant activation (208-240V AC, 220-250V DC), along with 2 normally open (NO) and 2 normally closed (NC) contacts.
This high-capacity circuit breaker is essential for protecting electrical distribution systems in heavy industrial facilities, power generation plants, and large commercial buildings. Its withdrawable design simplifies maintenance and replacement, while the advanced ETU release ensures precise fault detection and protection against overcurrents and short circuits.
Stanlo Automation, your veteran-owned surplus parts distributor, offers the Siemens 3WL1212-4CB35-4AN2. Source high-performance electrical protection equipment from us and ensure the safety and reliability of your power infrastructure.
| Poles | 3 |
| Rated Current (In) | 1250A |
| Voltage | up to 690V AC |
| Interrupting Capacity (Icu) | 100kA at 500V |
| Release Type | ETU 25 LSI |
| Operating Mechanism | Motorized with Spring Charging Motor |
| Activation Voltage | 230V AC / 220V DC |
| Undervoltage Release | 208-240V AC / 220-250V DC |
| Auxiliary Contacts | 2 NO + 2 NC |
| Connection | Rear horizontal |
| Size | II |
| Series | 3WL |