


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 Siemens 5SJ4340-7HG42 is a 3-pole miniature circuit breaker rated for 40 amps and designed for 480Y/277 volts applications. This circuit breaker meets the UL 489 standard and is suitable for branch circuit protection.
This circuit breaker is essential for protecting electrical circuits from overloads and short circuits. It is designed for industrial applications and has a thermal/magnetic trip mechanism.
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!
