What the ratings mean for fit
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. Its headline rating is the 70 kA breaking capacity at 415 V (class H) — that means it can safely interrupt a fault current up to 70,000 A without rupturing, which is essential for high-fault installations like transformer secondaries or large motor control centers where the available short-circuit current is substantial. 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
This breaker mounts in a standard panel or enclosure on a DIN rail or backplate; the 4-pole form factor fits IEC distribution boards and motor control centers. The 70 kA SCCR at 415 V means it can be used as a main or branch breaker in high-fault installations without cascading upstream — a key consideration for selectivity coordination studies. 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.