ABB THQLQ204020 20/40/20A Quadplex Miniature Circuit Breaker
- 20/40/20A
- 4 Pole
- Plug-On
Quantity
ABB THQLQ204020 - 20/40/20A Quadplex Miniature Circuit Breaker
New
Quantity
Description
Delivering high-density power distribution, this 20/40/20A quadplex breaker combines two 20A single-pole and one 40A double-pole circuit into a compact two-pole footprint. It is engineered for residential and commercial electrical systems requiring efficient space utilization. The plug-on design installs into ABB ReliaHome and GE PowerMark series panelboards without requiring special wing stabs. It provides 10 kAIC interrupting capacity at 120/240V with reliable thermal-magnetic protection.Specifications
| Brand | ABB |
|---|---|
| Series | THQLQ |
| Amperage | 20/40/20A |
| Poles | 4 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Frame Type | Q-Line |
|---|---|
| Terminal Type | Box Lugs |
| For Use With | ABB ReliaHome Load Centers, GE PowerMark Gold Load Centers, GE PowerMark Plus Load Centers |
| Wire Gauge | 14-8 AWG (Cu), 12-8 AWG (Al) (Outer); 8-4 AWG (Cu) (Inner) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Special Classification | Quadplex |
|---|---|
| Available Options | Padlock Attachment, Shunt Trip, Auxiliary Switch |
| Standards | HACR, SWD, UL 489 |
| Approval | cUL, UL |
| Temp Rating | 40C |
Product FAQs
7 answersWhich load centers are compatible with the THQLQ204020 quadplex breaker?
This breaker is designed for use in ABB ReliaHome, GE PowerMark Gold, and GE PowerMark Plus load centers. It utilizes a standard plug-on connection that mounts directly to the panel busbar.
How many panel spaces does the THQLQ204020 require?
As a quadplex breaker, it requires two standard 1-inch panel spaces to provide two single-pole 20A circuits and one double-pole 40A circuit, effectively doubling the circuit capacity in that space.
Does this quadplex breaker require special wing stabs for installation?
No. Unlike half-inch THQP breakers, the THQLQ series fits into standard 1-inch panel slots and does not require specialized wing stabs for mounting.
How are the 20A and 40A circuits configured on this breaker?
The THQLQ204020 features two independent 20-amp single-pole circuits on the outer positions and one 40-amp double-pole circuit with an internal common trip on the inner positions.
What wire sizes are accepted by the terminals on the THQLQ204020?
The box lug terminals support different wire gauges depending on the circuit. The outer 20A poles accept 14-8 AWG copper or 12-8 AWG aluminum wire, while the inner 40A poles accept 8-4 AWG copper wire.
What type of trip mechanism does this quadplex breaker use?
It utilizes a fixed thermal-magnetic trip mechanism with long-time and instantaneous (LI) trip functions. This ensures reliable protection against both sustained overloads and sudden short circuits.
Is the ABB THQLQ204020 interchangeable with the GE THQLQ204020?
Yes. Following ABB's acquisition of GE Industrial Solutions, Q-Line breakers are manufactured under the ABB brand but remain fully backwards compatible with legacy GE PowerMark panels.
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