Siemens Sentron low voltage coil for circuit breakers 3VA1 and 3VA2-20/26, with the following characteristics:
Supply voltage: 24 V DC
Compatibility: Siemens SENTRON series 3VA1 and 3VA2 circuit breakers (sizes 2026)
Maximum power consumption: 2.5 W
Impulse resistance: 4 kV
Mounting: 3-slot
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The 24 V DC low voltage coil from the SENTRON series is an auxiliary accessory designed to be integrated with Siemens 3VA1 and 3VA2 (2026) circuit breakers. It functions as an auxiliary release, automatically disconnecting the circuit breaker in case of a voltage drop below the nominal value, ensuring the safety of the system under abnormal conditions.
It is an essential component for electrical protection systems, where voltage status control is crucial, such as in industrial electrical panels, automated systems, or critical applications in civil and tertiary sectors.
According to IEC:
Stripping length: 10 mm
Conductor section (AWG): from 20 to 16
According to UL:
Stripping length: 0.4 in
Tightening torque: 3.5 4.4 lbf·in
Automatic protection against undervoltages
Low voltage distribution systems with SENTRON 3VA circuit breakers
Industrial and civil applications requiring safe disconnection in case of voltage drop
Integration in modular electrical panels
| Pollution degree | 3 |
| Overvoltage category | III |
| Power consumption (DC) | Max. 2.5 W |
| Impulse voltage | 4 kV |
| Height | 65.1 mm |
| Width | 25.7 mm |
| Depth | 28.8 mm |
| Occupied slots | 3 |
| Terminal tightening torque (IEC) | 0.4 – 0.5 N·m |
| Terminal tightening torque (UL) | 3.5 – 4.4 lbf·in |
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