Motor branch circuit protection — what the 70-90 A range and 50 kA mean
The MS495-90 is a 3-pole manual motor protector covering the 70.0 to 90.0 A adjustment range, with a 50 kA interrupting capacity at the fault level. This places it as the branch-circuit protection device for motors drawing 70-90 A full-load current — typically 30-50 HP at 460 V, depending on motor efficiency and service factor. The operating temperature range of -20 to 60 °C covers standard indoor environments without derating.
Active production — no lifecycle risk for BOM planning
ABB provides standard compliance documentation including UL listing, CE marking, and RoHS/REACH declarations. The UL rating is specifically called out in the description, which simplifies acceptance for North American panel shops.