PRODUCT DESCRIPTION
SIEMENS 3WL1212-3AA32-4GN4 Z - Air Circuit Breaker
The SIEMENS SENTRON 3WL1212-3AA32-4GN4 Z is a fixed-mounted, 3-pole air circuit breaker from the SENTRON 3WL series, designed for robust protection and switching operations in low-voltage power distribution systems. This device integrates an electronic trip unit for precise overcurrent, short-circuit, and ground fault protection, making it suitable for main circuit protection, generator protection, and system protection in industrial and infrastructure applications. Its motorized operating mechanism ensures reliable remote control and automated switching sequences.
Technical Specifications:
- SERIES/FAMILY: SENTRON 3WL
- COMPONENT TYPE: Air Circuit Breaker (ACB)
- ELECTRICAL SPECS:
- POLES: 3-pole
- RATED CURRENT: 1000A to 2000A (Frame Size 2)
- RATED OPERATIONAL VOLTAGE (Ue): Up to 690V AC
- RATED INSULATION VOLTAGE (Ui): 1000V AC
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 12kV
- RATED SHORT-CIRCUIT BREAKING CAPACITY (Icu): 42kA at 400/415V AC
- RATED SHORT-CIRCUIT OPERATING BREAKING CAPACITY (Ics): 100% of Icu
- FREQUENCY: 50/60 Hz
- MECHANICAL/PHYSICAL:
- MOUNTING TYPE: Fixed-mounted
- FRAME SIZE: 2
- OPERATING MECHANISM: Motorized stored energy mechanism
- INTERFACE/CONTROL:
- TRIP UNIT: Electronic Trip Unit (ETU) with LSI protection (Long-time, Short-time, Instantaneous)
- AUXILIARY CONTACTS: 4 Normally Open (NO) + 4 Normally Closed (NC)
- ALARM SWITCH: Included
- NEUTRAL PROTECTION: Included
- ENVIRONMENTAL/MOUNTING:
- IP RATING: IP20 (front), IP00 (terminals)
- COOLING METHOD: Natural convection
- MOUNTING STYLE: Fixed-mounted in switchgear panels
- COMPATIBILITY/APPLICATION:
- Main circuit protection in industrial plants, infrastructure, and buildings
- Generator protection, motor protection, and system protection
- Integration into switchgear, distribution boards, and control panels