Square D SDT220 Miniature Circuit Breaker
- 20A
- 2 Pole
- Plug-On
Quantity
Square D SDT220 - 20A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Supplying 240V power to residential loads, this 20A two-pole breaker provides essential thermal-magnetic protection. It is ideal for dedicated circuits like baseboard heaters or small air conditioners. Designed as a replacement component, this plug-on breaker fits seamlessly into Square D Trilliant load centers. It utilizes standard box lug terminals that accept 14-8 AWG wiring. With a 10 kAIC rating, it features the Visi-Trip indicator to easily identify tripped circuits and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Series | SDT |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Plug-On |
| Voltage | 120/240VAC |
| Phase | 1 |
| AIC Rating | 10kA @ 120/240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Square D Trilliant Load Centers |
| Wire Gauge | 14-8 AWG |
| Max Wire | 8 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Standards | HACR, UL 489 |
|---|---|
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Visual Trip Indicator, HACR Rated |
Product FAQs
5 answersWhat load centers are compatible with the Square D SDT220?
The SDT220 is designed exclusively for use in Square D Trilliant load centers. It features a unique physical footprint that will not fit in standard QO or Homeline panels.
Can I install a modern Square D QO or Homeline breaker in place of the SDT220?
No. Trilliant load centers require Trilliant-specific breakers. Standard QO or Homeline breakers are not interchangeable with the SDT series due to differences in the busbar connection.
Are Square D Trilliant SDT breakers still manufactured?
No, the Square D Trilliant series is a legacy product line that has been discontinued by the manufacturer.
Is there a direct cross-reference replacement for the SDT220?
There is no modern direct replacement for the SDT220. Because the Trilliant panel design is obsolete and proprietary, you must use an original SDT series breaker to maintain panel compatibility.
Is the Square D SDT220 HACR rated?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires this specific safety designation.
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