Federal Pacific HEF437040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Federal Pacific
HEF437040
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
HEF437040
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Federal Pacific HEF437040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Similar Items
70A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
Description
Part of the legacy H-Frame series, the Federal Pacific HEF437040 is a 40A, three-pole molded case circuit breaker. It provides a reliable solution for maintaining older commercial power distribution networks. The breaker features a bolt-on mounting style designed exclusively for FPE panelboards. It acts as a substitute for the NEF437040 and UBIF040, ensuring precise compatibility. Delivering high interrupting capacity, this unit is rated 42kAIC at 240V and accepts 14-1/0 AWG wire.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HEF437040 |
| Series | HEF |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 22kA @ 480VAC |
| Frame Type | HEF |
|---|---|
| Terminal Type | Lugs |
| For Use With | FPE Panelboards and Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1, CSA C22.2 No. 5.1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Product FAQs
7 answersWhat equipment is the HEF437040 circuit breaker designed to fit?
This breaker is engineered specifically for legacy Federal Pacific Electric (FPE) panelboards and switchboards that accept bolt-on H-Frame molded case circuit breakers.
What are the wire gauge and material requirements for the HEF437040 terminals?
The standard lugs accommodate conductor sizes from 14 AWG up to 1/0 AWG. The terminals are rated for use with both copper (Cu) and aluminum (Al) wiring.
How does the interrupting rating (AIC) change based on the system voltage?
The HEF437040 provides an interrupting capacity of 22kAIC when installed on a 480VAC system. If applied to a 240VAC system, the interrupting capacity increases to 42kAIC.
What type of protection is provided by the LI trip unit on this breaker?
The LI designation means the thermal-magnetic trip unit includes Long-Time (L) protection for sustained overloads and Instantaneous (I) protection for short circuits. Both the thermal and magnetic elements are fixed and cannot be adjusted.
How is the HEF437040 secured inside the panelboard?
This is a bolt-on circuit breaker. It must be mechanically bolted directly to the busbars of a compatible FPE panelboard or switchboard to ensure a secure electrical connection.
What frame classification does the HEF437040 fall under?
This model is part of the Federal Pacific H-Frame family, specifically utilizing the HEF frame design. Verify that your existing panel or enclosure is configured for FPE H-Frame dimensions before installation.
Can the trip settings on the HEF437040 be modified in the field?
No, this breaker utilizes fixed thermal and fixed magnetic trip elements. The 40-amp overload threshold and the instantaneous short-circuit pickup are factory calibrated and cannot be adjusted by the installer.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
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.
Same Day Shipping
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.