Q21540CT - Siemens 40 Amp 240 Volt 2 Pole Plug-In Triplex Circuit Breaker, 10kA Interrupt Rating

Product Overview

Siemens Q21540CT is a 2-pole, 40 amp, 240 volt plug-in triplex circuit breaker intended for use in compatible Siemens/compatible panels. It is rated with a 10,000 A interrupting capacity (10kA).

This SKU is supplied as a new circuit breaker. Confirm panel compatibility and required quantity before ordering; request a quote for pricing and availability.

Key Features

• 40 amp continuous rating per pair of poles
• 2-pole configuration for 240 V circuits
• Plug-in mount (triplex style)
• 10kA interrupting rating

Function and Intended Use

The Q21540CT is a two-pole circuit breaker designed to provide overcurrent protection for 240 V branch circuits. As a plug-in triplex-style breaker, it occupies the required breaker space in a compatible plug-in load center and interrupts both poles simultaneously.

• Protects 240 V loads served across two poles
• Trip mechanism interrupts both poles for simultaneous protection

Electrical Ratings and Performance

Key electrical specifications for this SKU are provided to establish suitability for a given application.

• Ampere rating: 40 A (two-pole)
• Voltage rating: 240 V
• Interrupting rating: 10 kA (10,000 A)

Compatibility and Mounting

The Q21540CT is a plug-in triplex breaker intended for use in compatible Siemens or Siemens-compatible load centers that accept this style of breaker. Panel model compatibility, bus-connector style, and available breaker spaces must be confirmed prior to installation.

• Mount: plug-in (triplex style)
• Confirm panel accepts Siemens Q-type plug-in breakers before ordering

Ordering Guidance

This page describes the exact SKU Q21540CT. Price and availability are handled through a request-for-quote process.

• Confirm the model number and quantity required before ordering
• Request a quote for pricing, lead time, and purchase options

Before You Order

Confirm the exact model number (Q21540CT), the quantity required, and panel compatibility before submitting a request for quote or placing an order.

• Verify the load center accepts Siemens Q-type plug-in breakers
• Provide panel model and serial or breaker layout when requesting a quote

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Q21540CT - Siemens 40 Amp 240 Volt 2 Pole Plug-In Triplex Circuit Breaker, 10kA Interrupt Rating. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.