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Square D SDT220 Miniature Circuit Breaker

  • 20A
  • 2 Pole
  • Plug-On
Square D SDT220
Miniature Circuit Breaker
Brand Square D
SKU SDT220
Select Item Condition
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  • 20A
  • 2 Pole
  • Plug-On

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Square D SDT220 - 20A 2 Pole Miniature Circuit Breaker

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$319.00 No Stock

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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

Key specifications
Brand Square D
Series SDT
Amperage 20A
Poles 2
Mounting Style Plug-On
Voltage 120/240VAC
Phase 1
AIC Rating 10kA @ 120/240VAC
Fit and installation
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
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Standards HACR, UL 489
Approval UL
Temp Rating 40C
Construction Features Visual Trip Indicator, HACR Rated

Product FAQs

5 answers
What 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 Because the Trilliant panel design is obsolete and proprietary, you must use an original SDT series breaker to maintain panel compatibility.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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