Integrator's spec recap
The Siemens 3VA1132-3EF42-0AA0-ZD00 is a 4-pole molded case circuit breaker in the 3VA1 IEC frame 160 platform, configured as a line-protection device with a TM240 thermal-magnetic trip unit. Rated In=32A with overload adjustment Ir=22A...32A and short-circuit pickup Ii=5...10 x In, it delivers a breaking capacity Icu=25kA at 415V, classification class N. The N conductor is unprotected, and the unit includes a nut keeper kit; this variant carries a DC Power OEM designation for the China market.
What the ratings mean for fit
The 25kA Icu at 415V places this breaker in breaking capacity class N, which is the standard level for general-purpose distribution in IEC markets — adequate for most commercial and light industrial panelboards where the prospective short-circuit current at the point of installation does not exceed 25kA. The TM240 thermal-magnetic trip provides fixed magnetic pickup at 5-10x In (160-320A), suitable for protecting cable runs and resistive/light inductive loads; for motor starting applications, a higher magnetic setting or electronic trip would be preferred. The unprotected N conductor signals this is a 3-pole-plus-neutral configuration where the neutral is not switched — common in TN-S systems where the neutral is bonded to ground at the source.
Deployment context
Mounts in a standard panel enclosure on a DIN rail or directly to a mounting plate via the frame's screw-down lugs. The 4-pole footprint occupies four module widths in a typical IEC distribution board. The nut keeper kit simplifies captive hardware handling during panel assembly.