Q240 - Siemens 40 Amp 2 Pole 120/240V Thermal Magnetic Circuit Breaker Type QP 10kA Interrupt

Product Overview

The Siemens Q240 is a Type QP thermal-magnetic circuit breaker rated for 40 amps and two-pole 120/240V service with a 10 kA interrupting rating.

This SKU (Q240) is a single new circuit breaker part intended for panelboard and distribution applications where a two-pole, common-trip protective device is required.

Key Features

• 40 amp current rating (two-pole)
• Thermal-magnetic trip characteristic for combined overload and short-circuit protection
• 120/240 volt AC service
• Type QP form factor compatible with Siemens/QP panelboards
• 10 kA interrupting rating

What this breaker does

The Q240 is a two-pole thermal-magnetic circuit breaker that provides combined overload (thermal) and short-circuit (magnetic) protection for branch circuits. As a two-pole device, it opens both ungrounded conductors simultaneously for multi-wire or 240V loads requiring common disconnection.

• Protects branch circuits up to 40 amps
• Common-trip two-pole operation for 120/240V circuits
• Thermal-magnetic mechanism handles both prolonged overloads and instantaneous faults

Electrical ratings and performance

Use the Q240 where a 40 A, 120/240 V two-pole protection device with a 10 kA interrupting rating is required.

• Rated current: 40 A
• Voltage: 120/240 VAC
• Interrupting rating: 10 kA (10,000 A)
• Type: Thermal-magnetic (Type QP)

Panel and application compatibility

The Q240 is intended for installation in equipment that accepts Siemens Type QP breakers. Confirm physical and electrical compatibility with the target panelboard before ordering.

• Compatible with panelboards that accept Siemens QP form-factor breakers
• Suitable for branch-circuit protection of 120/240V loads requiring two-pole protection

Mounting and physical considerations

The Q240 is supplied as a single replacement/installation breaker (SKU Q240). Confirm the panel’s required breaker footprint and handle tie/common-trip accommodations during selection.

• Sold as one Type QP two-pole breaker (SKU Q240)
• Confirm panel form factor and available spaces prior to installation

Before You Order

Confirm the model number (Q240), panelboard compatibility, and the quantity required before ordering. This listing describes the single Siemens Q240 two-pole 40A breaker.

• Verify the panel accepts Siemens Type QP breakers and the required two-pole footprint
• Confirm the interrupting rating and electrical ratings match the application's requirements
• If uncertain about compatibility or local code requirements, consult a qualified electrician

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Q240 - Siemens 40 Amp 2 Pole 120/240V Thermal Magnetic Circuit Breaker Type QP 10kA Interrupt. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.