ABB / General ElectricTHLC134015
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ABB / General Electric THLC134020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
ABB / General Electric
THLC134020
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THLC134020
Quantity
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ABB / General Electric THLC134020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
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Description
Part of the THLC series, this 3-pole 20A circuit breaker utilizes a current-limiting design to minimize let-through energy. This advanced protection safeguards downstream equipment from severe electrical faults. The bolt-on MCCB installs into GE A-Series and Spectra panelboards, as well as compatible motor control centers. It utilizes fixed thermal-magnetic trip technology for accurate response. Rated for an impressive 200kAIC at 480VAC, the breaker handles high-fault environments with ease.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THLC134020 |
| Series | THLC |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC |
| Frame Type | THLC1 |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE A-Series Panelboards, GE Spectra Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-3 AWG (Cu), 12-1 AWG (Al) |
| Max Wire | 3 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 | Load Side Lugs Included (TCAL12) |
| Standards | UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, High Interrupting Capacity, HACR Rated, Common Trip, Trip-Free Mechanism |
| Special Features | Current Limiting |
Product FAQs
8 answersWhich panelboards are compatible with the THLC134020 circuit breaker?
This bolt-on breaker is designed for use in GE A-Series panelboards, GE Spectra panelboards, switchboards, and motor control centers.
What are the acceptable wire sizes for the lugs on the THLC134020?
The factory lugs accept 14 to 3 AWG copper wire or 12 to 1 AWG aluminum wire. Ensure proper torque specifications are followed during installation.
How does the current limiting feature of the THLC134020 operate?
As a current limiting breaker, it is designed to clear a fault in less than half a cycle. This rapid action significantly reduces the peak let-through current and energy, providing enhanced protection for downstream equipment.
Why might the THLC134020 arrive with ABB branding instead of General Electric?
ABB acquired GE Industrial Solutions. As a result, Q-Line breakers like the THLC134020 may feature either GE or ABB branding depending on the manufacturing date, but they are physically and electrically identical.
Are the thermal and magnetic trip settings adjustable on the THLC134020?
No, this THLC1 frame breaker features fixed thermal (long-time) and fixed magnetic (instantaneous) trip elements. They cannot be adjusted in the field.
Can the THLC134020 be used in 240V systems?
Yes, while it is rated for up to 480VAC with a 200kAIC interrupting capacity, it is fully certified for use in lower voltage 240VAC systems while maintaining the same 200kAIC rating.
Is the THLC134020 interchangeable with standard THQB or THHQB breakers?
No, the THLC134020 is a current limiting THLC1 frame breaker with a much higher interrupting rating (200kAIC). It is not a direct physical or electrical drop-in for standard 10kAIC or 22kAIC Q-Line breakers unless the panel and system coordination specifically allow it.
Does the THLC134020 mount to a standard DIN rail?
No, this is a bolt-on molded case circuit breaker designed to bolt directly to the busbars in compatible GE panelboards and switchboards. It does not support DIN rail mounting.
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