Restoring older commercial electrical systems is simple with the Zinsco SEH3C015. This 15-amp, 3-pole molded case circuit breaker provides essential thermal-magnetic protection for demanding industrial environments. Engineered for a precise fit, it bolts into Eaton F-Frame, Challenger, Sylvania, and Westinghouse panelboards. It effectively replaces the EHD3015, allowing facility managers to maintain existing infrastructure. This HACR-rated unit features an 18kAIC interrupt rating at 240VAC.
Which panelboards are compatible with the SEH3C015 circuit breaker?
This bolt-on breaker is designed for use in legacy Sylvania, Challenger, and Westinghouse panelboards, as well as Eaton F-Frame panelboards.
Can the Sylvania SEH3C015 replace other legacy breakers?
Yes. Because Sylvania's commercial molded case lines were later acquired and rebranded, this breaker is often used to replace equivalent Challenger or Westinghouse F-Frame breakers with matching specifications.
What wire sizes are accepted by the terminals on the SEH3C015?
The standard lugs accommodate 14 AWG through 1/0 AWG aluminum or copper conductors. Always verify the specific torque requirements labeled on the breaker face or panelboard before terminating.
Are there special installation requirements for mounting this breaker in older panels?
As a bolt-on molded case circuit breaker, it mounts directly to the busbar. When installing in legacy Sylvania or Challenger panels, inspect the busbar connections to ensure they are clean and free of pitting or thermal damage before securing the breaker.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.