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Eaton / Cutler-Hammer FB3070L Molded Case Circuit Breaker
- 70A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
FB3070L
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FB3070L
Quantity
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Eaton / Cutler-Hammer FB3070L - 70A 3 Pole Molded Case Circuit Breaker
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Description
Designed to handle demanding loads, the Eaton FB3070L is a 70-amp, 3-pole molded case circuit breaker. It offers dependable thermal-magnetic protection with fixed long-time and instantaneous trip functions. Unlike bolt-on variants, this unit mount MCCB comes standard with line and load lugs for versatile wiring. It is fully compatible with legacy Westinghouse and Eaton Pow-R-Line motor control centers. The breaker is HACR rated and delivers an 18kAIC interrupting capacity at 240VAC.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FB3070L-R |
| Series | FB |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse / Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | NEMA AB-1, UL 489, CSA C22.2 No. 5 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat does the L signify in the FB3070L catalog number?
The L indicates that the circuit breaker is supplied with factory-installed line and load lugs. Standard FB3070 models without the L suffix may require separate lug kits or are configured for bolt-on applications.
Which panelboards and distribution systems are compatible with the FB3070L?
This F-Frame circuit breaker is designed for use in legacy Westinghouse and Eaton Pow-R-Line panelboards, switchboards, and motor control centers that accept unit-mount breakers.
Is the Eaton FB3070L a direct replacement for older Westinghouse FB breakers?
Yes, Eaton acquired the Westinghouse distribution equipment line. The Eaton or Cutler-Hammer FB3070L is a direct replacement for original Westinghouse breakers sharing the exact same catalog number.
How does the FB3070L mount into an electrical enclosure?
The FB3070L is a unit-mount, feed-thru circuit breaker. It mounts independently to the enclosure backpan or mounting plate using hardware and connects to the power source and load via the included wire lugs, rather than bolting directly to a panelboard bus.
Are the trip settings on the FB3070L adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit. It provides non-adjustable long-time overload and instantaneous short-circuit protection.
What wire sizes are accepted by the standard lugs on the FB3070L?
The included line and load lugs accept copper or aluminum wire ranging from 14 AWG to 1/0 AWG. Ensure proper torque specifications are followed during installation.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- SDSal D.Verified BuyerReviewingEaton / Cutler-Hammer FB3125 - 125A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/16/26Breakers
Really happy with the breakers and with the quickness they were delivered
- CBChristopher B.ReviewingEaton / Cutler-Hammer FB3015L - 15A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/8/20AWESOME JOB
Quick response and delivery. Exactly what I wanted.