Square D FH36070-1021 Molded Case Circuit Breaker
- 70A
- 3 Pole
- I-Line
Quantity
Square D FH36070-1021 - 70A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy F-Frame series, the Square D FH36070-1021 provides 70A of thermal-magnetic protection. It features a factory-installed 120-240VAC shunt trip for remote opening capabilities in commercial systems. This 3-pole MCCB installs into Square D I-Line panelboards. It serves as a reliable replacement for older installations and can be upgraded to the PowerPact HGA36070 series. Rated for 65kAIC at 240VAC, it handles demanding fault currents. The unit includes fixed LI trip functions.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH36070-1021-R |
| Series | FH |
| Amperage | 70A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (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 | Shunt Trip (Factory Installed) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, RoHS Compliant, Mercury Free, PVC Free |
Product FAQs
6 answersCan I install the FH36070-1021 in a standard load center?
No, this breaker features a specialized plug-on jaw connection designed exclusively for Square D I-Line panelboards and switchboards. It will not fit in standard QO, Homeline, NQ, or NF series load centers.
What does the "-1021" suffix indicate on this circuit breaker?
The -1021 suffix means the breaker comes with a factory-installed 120/240VAC shunt trip accessory. This allows the breaker to be opened remotely by applying a control voltage to the shunt trip leads, which is commonly used for emergency stop or fire alarm integration.
How is the shunt trip wired on the FH36070-1021?
The factory-installed shunt trip features pigtail wire leads that exit the breaker housing. These leads must be connected to an external 120VAC or 240VAC control circuit to actuate the remote trip function.
Is the Square D FH36070-1021 still manufactured?
The FH series is a legacy F-frame molded case circuit breaker and is no longer in active production. Square D has replaced this line with the modern PowerPact H-frame series for I-Line panelboards.
Is this breaker suitable for direct current applications?
Yes, the thermal-magnetic trip unit in this breaker is rated for DC power systems up to 250VDC, providing an interrupting capacity of 10kA.
What does the "LI" trip function code mean for this breaker?
The LI designation indicates that the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. On this specific FH frame model, both the thermal and magnetic trip points are fixed and cannot be adjusted in the field.
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.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.
- DMDonald M.Verified BuyerReviewingSquare D FH36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Excellent Service
The support team with Super Breakers went over and beyond in ensuring the breakers were on site for an emergency repair…
CAVA Construction Manager very pleased!
Donald Mayo
Mayo Electric
- PHpayton h.Verified BuyerReviewingSquare D FH36090 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26great
great straightforward company has almost everything you could ever need in stock
- SGShawn G.Verified BuyerReviewingSquare D FH36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/20/26Thanks !
Excellent service & gear per usual !
Thanks !
- EEarnestVerified BuyerReviewingSquare D FH36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/3/25Fast delivery and quality
The breaker was in great condition.
- JPJason P.Verified BuyerReviewingSquare D FH36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/5/25Breakers
Order was placed and they came in on time in good condition