Its interrupting capacity reaches 52.5 kA at 240 V AC and 32 kA at 415 V, with a rated insulation voltage of 800 V — headroom that keeps it selective with downstream branch breakers on high-fault utility feeds.
At 240 V the breaker clears 52.5 kA; at 415 V it clears 32 kA; at 440 V it clears 13.6 kA; at 500 V and 690 V it clears 7.5 kA. For a 480 V panel with a 25 kA available fault current, this breaker has 7.5 kA headroom at 500 V — a comfortable margin that supports selective coordination with downstream 10 kA rated MCBs.
The 20 A rating holds flat from 40 °C to 55 °C; at 60 °C and 65 °C it derates to 19 A, and at 70 °C it stays at 19 A. Maximum power loss is 14.5 W — relevant for enclosure heat rise calculations when multiple breakers are ganged in a panel.
Integrated undervoltage release and auxiliary switches
A trip indicator is present on the front face for local visual confirmation.
Mounting dimensions and panel fit
The 3-pole width (76.2 mm) matches the standard 3-module MCCB footprint on DIN-rail or panel-mount adapters.