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Siemens Q21540CTNC - 15/40A Triplex Miniature Circuit Breaker

Brand Siemens
SKU Q21540CTNC

Siemens Q21540CTNC - 15/40A Triplex Miniature Circuit Breaker

Brand Siemens
SKU Q21540CTNC
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Siemens Q21540CTNC - 15/40A Triplex Miniature Circuit Breaker

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$64.26 In stock

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DescriptionSpecificationsSuperClubWarranties
Description
Engineered for legacy applications, the Siemens Q21540CTNC is a Non-CTL triplex breaker. It houses a 40A double-pole center and two 15A single-pole outer circuits within a two-space form factor. Lacking a rejection clip, this plug-on unit is intended exclusively for pre-1968 Siemens load centers that do not accept modern CTL components. It serves as an exact substitute for the MP21540CTNC. Operating at 120/240VAC with a 10kAIC rating, it allows safe circuit expansion in older systems.

Specifications

Brand Siemens
Series QT
Amperage 15/40A
Voltage 120/240VAC
Poles 4
Phase 1
AIC Rating 10kA @ 120/240VAC
Special Classification Triplex
Mounting Style Plug-On
Terminal Type Lugs
For Use With Siemens Load Centers (Non-CTL / Pre-1968)
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed
Wire Gauge 15A Poles: 14-6 AWG (Cu), 12-6 AWG (Al); 40A Poles: 8-6 AWG (Cu), 8-4 AWG (Al)
Max Wire 6 AWG (Cu), 4 AWG (Al)
Min Wire 14 AWG
Available Options Padlock Attachment
Accessories Non-CTL (No Rejection Clip)
Standards HACR, SWD (15A Poles), UL 489
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, Insta-Wire

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Warranties

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