



Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The ABB ST203M-K40 miniature circuit breaker provides supplementary protection up to 480 Y / 277 VAC and 125 VDC. It is fully compatible with System pro M compact accessories. This 3-pole, 40 amp circuit breaker features a K curve and is suitable for DIN rail mounting. It conforms to UL 1077 and CSA 22.2 standards.
The ABB ST203M-K40 is a miniature circuit breaker with a K curve, DIN rail mount, and 40A current rating.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!

