ABB / Thomas & Betts FS340020ASR01 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Unit Mount
Quantity
ABB / Thomas & Betts FS340020ASR01 - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Built for demanding industrial environments, the ABB FS340020ASR01 provides 20A overcurrent protection with a factory-installed 120VAC shunt trip. This 3-pole breaker allows for remote tripping in emergency or control applications. It installs into Westinghouse and Eaton F-Frame panelboards, including PRL3a and PRL4, as well as switchboards. When replacing this unit, the EHD3020 or FDB3020 can be used with an added shunt trip kit.Specifications
| Brand | ABB / Thomas & Betts |
|---|---|
| Part Number | FS340020ASR01 |
| Series | FS |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse / Eaton F-Frame Panelboards (e.g., PRL3a, PRL4), Switchboards, Motor Control Centers |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 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 | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the FS340020ASR01 circuit breaker?
This breaker is designed to install into legacy Westinghouse and Eaton F-Frame panelboards, including the PRL3a and PRL4 series, as well as compatible switchboards and motor control centers.
What is a direct replacement for the Thomas & Betts FS340020ASR01?
If the exact FS340020ASR01 is unavailable, you can use an Eaton EHD3020 or FDB3020 circuit breaker equipped with a 120VAC shunt trip kit as a functional replacement in F-Frame applications.
What does the SR01 suffix indicate on this FS-frame breaker?
The SR01 suffix designates that this circuit breaker includes a factory-installed 120VAC shunt trip. This allows for remote tripping of the breaker in emergency shutdown or control applications.
Is the FS340020ASR01 a plug-on or bolt-on breaker?
The FS340020ASR01 is a unit-mount circuit breaker, meaning it bolts into place. It is designed to be hardwired and securely mounted within F-Frame panelboards and switchboards, rather than snapping onto a busbar.
Does the FS340020ASR01 offer adjustable trip settings for coordination?
No, this unit features a non-interchangeable thermal-magnetic trip unit with fixed long-time and instantaneous (LI) protection. If your application requires adjustable trip curves, you will need to upgrade to a breaker with an electronic trip unit.
Can I use this 480VAC breaker in a DC control circuit?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with a 10kA interrupting capacity. This makes it suitable for certain DC motor control centers and battery systems.
Are the standard lugs on the FS340020ASR01 rated for aluminum wiring?
Yes, the factory-installed lugs are dual-rated for both copper and aluminum (Cu/Al) conductors ranging from 14 AWG to 4 AWG. Ensure proper torque specifications are followed during installation to prevent thermal issues.
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 1 review.
- AOAnthony O.ReviewingEaton / Cutler-Hammer FS340020A - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/18/21Circuit Breaker Purchase
All circuit breakers were shipped in a timely manner with no mistakes. Thank You!