The Siemens 3VA1132-5GF42-0AA0-ZD00 is a 4-pole IEC molded-case circuit breaker in the 3VA1 frame 160 platform, rated for line protection with a TM240 thermal-magnetic trip unit. Breaking capacity class M delivers Icu=55kA at 415 VAC — that is the maximum fault current it can safely interrupt without damage, sized for industrial distribution panels where high available fault current is expected. Overload protection is adjustable Ir=22A...32A, and short-circuit protection Ii=5...10 x In, giving the panel builder flexibility to coordinate with downstream loads. The N conductor is protected at 100% (full-rated neutral). A nut keeper kit is included, and this variant is configured for a DC Power OEM in China.
What the ratings mean for fit
The 55 kA Icu at 415 V is the headline number — it tells you this breaker can clear a fault up to that level without welding contacts or rupturing the case, which is critical for installations with large transformers or utility feeds. The adjustable overload range (22–32 A) means one part covers a band of load currents, reducing SKU count. Short-circuit pickup at 5–10 x In (160–320 A) is typical for motor branch circuits where you want to ride through inrush without nuisance tripping. Full-rated neutral (100%) is important when harmonic currents from VFDs or LED lighting can overload a reduced-neutral breaker.
Integration notes
Mounts in a standard panel or enclosure on a DIN rail or direct-mount plate — the 3VA1 frame 160 footprint is consistent across the series. The nut keeper kit simplifies field wiring of the line and load lugs. Four-pole configuration fits 3-phase + N distribution; the neutral is switched and protected. Verify the TM240 trip curve against your load type (motor vs. resistive) during coordination study.