Square D FCP34070MT1212 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
Quantity
Square D FCP34070MT1212 - 70A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Belonging to the legacy F-Frame family, the FCP34070MT1212 is a 3-pole, 70A molded case circuit breaker built for commercial and industrial facilities. It provides reliable thermal-magnetic protection for demanding electrical distribution systems. This bolt-on breaker installs into Square D panelboards and motor control centers. As a legacy component, it is commonly replaced by the HJL36070 frame for modern upgrades. Rated 65kAIC at 480VAC, it includes a factory-installed auxiliary switch.Specifications
| Brand | Square D |
|---|---|
| Series | FCP |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Side Lugs Included, Auxiliary Switch (Factory Installed), Plug-on Shroud |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB-1, W-C-375B/GEN |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Extra High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
7 answersWhat equipment is the FCP34070MT1212 circuit breaker compatible with?
This legacy F-Frame breaker is designed for use in Square D panelboards, switchboards, and motor control centers that accept bolt-on molded case circuit breakers.
Is there a modern replacement for the legacy FCP34070MT1212?
Yes. Square D has transitioned from the legacy F-Frame to the PowerPact H-Frame series. The base replacement is the HJL36070, but you must verify that the new breaker is configured with the equivalent auxiliary switch and lug setup to match your existing unit.
What does the 1212 suffix indicate on this Square D breaker?
The 1212 suffix indicates that the breaker is factory-equipped with a 1A/1B (one normally open, one normally closed) auxiliary switch for remote status signaling.
Can I use aluminum wire with the FCP34070MT1212?
Yes, the standard factory lugs on this breaker are dual-rated for both copper (Cu) and aluminum (Al) conductors ranging from 14 AWG to 1/0 AWG.
Can the FCP34070MT1212 be used on a 240V system?
Yes, while it is rated for 480V AC with a 65kA interrupting capacity, it is fully compatible with 240V AC systems, where it provides an increased interrupting capacity of 100kA.
Is the trip unit on the FCP34070MT1212 adjustable?
No, this breaker features a fixed thermal and fixed magnetic trip unit. If your application requires adjustable trip settings, you will need to upgrade to a breaker with an electronic trip unit or an adjustable magnetic trip.
Does the FCP34070MT1212 provide ground fault protection?
No, this is a standard thermal-magnetic breaker with long-time and instantaneous (LI) trip functions. It does not include integral ground fault protection.
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