The 3VA1132-6EE42-0AA0-ZD00 is a 4-pole IEC frame 160 molded-case circuit breaker from the Siemens 3VA1 series, configured as a line-protection device with a thermal-magnetic TM220 trip unit. The adjustable overload protection (Ir = 22 A to 32 A) lets you fine-tune the continuous current setting to match the downstream load, while the fixed short-circuit pickup at 10 x In (320 A instantaneous) clears hard faults fast. The N conductor is unprotected, so this breaker is intended for 3-phase + N systems where you manage neutral protection separately or the neutral is not expected to carry fault current.
Deployment context
The nut keeper kit is a mechanical detail for the China DC Power OEM variant, ensuring the terminal hardware stays captive during vibration in DC power equipment.