The Siemens 3VA1116-3GF42-0AA0-ZD00 is a 4-pole IEC frame 160 molded case circuit breaker rated for line protection. It carries a breaking capacity class N with Icu=25kA at 415V, which means it can safely interrupt fault currents up to that level on a 415V three-phase system without welding its contacts or rupturing the arc chamber. That rating is the one you check first for panel SCCR compliance. The thermal-magnetic trip unit is a TM240 with ATAM (adjustable thermal, adjustable magnetic). Overload protection (Ir) adjusts from 112A to 160A, and short-circuit protection (Ii) from 5 to 10 times In. That means you set the thermal dial to match your continuous load current and the magnetic dial to ride through motor inrush without nuisance tripping. This variant includes 100% N-conductor protection and a nut keeper kit, specified for a DC Power OEM in China. The N-conductor protection means the neutral pole is switched and protected — important for TN or TT systems where you need full isolation on all poles.
Lifecycle and Sourcing
For BOM-line commitment, the key fit-check ratings are the 160A frame, 25kA breaking capacity at 415V, and the 4-pole configuration with N-conductor protection. Sourced and quoted to order against an RFQ through independent distribution — availability and current pricing confirmed at quote time.
Deployment Context
This is a panel-mount MCCB for distribution boards or motor control centers. The 4-pole form factor with N-conductor protection suits 3-phase + neutral systems common in European and Asian industrial installations. The nut keeper kit simplifies busbar connection during panel build — one less loose hardware headache at commissioning.