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. 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.
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.
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.