Square D THQL2150 50A 2-pole Circuit Breaker 120/240V

Product Description

The SQUARE D THQL2150 is a 2-pole, 50-amp plug-in circuit breaker rated for 120/240 volt AC service with a 10-kiloamp interrupting rating. Designed for use in load centers, it provides overcurrent protection for branch circuits in residential and light commercial electrical systems. The non-interchangeable plug-in mounting ensures correct installation in compatible load centers. It accepts wire sizes from 8 to 3 AWG, making it suitable for a range of 240-volt branch circuit applications including HVAC equipment, water heaters, and subpanels. Licensed electricians are the primary installers for this type of breaker.

The THQL2150 is suited for residential and light commercial load centers where a 2-pole, 50-amp branch circuit breaker is required. Common applications include dedicated circuits for central air conditioning units, electric dryers, electric ranges, EV charging equipment, and similar 240-volt loads. The non-interchangeable design limits use to compatible SQUARE D load center enclosures, maintaining panel integrity and safety compliance.

Key Features

• 50-amp current rating for 240-volt branch circuit protection
• 10-kiloamp interrupting rating for fault current protection
• 1-inch plug-in mounting for straightforward load center installation
• Quick-make/quick-break mechanism for reliable switching operation
• Common trip bars ensure simultaneous disconnection of both poles
• Easy-to-spot trip indication for fast fault identification
• UL listed for use in Canada and the United States

Compatibility

Designed as a non-interchangeable plug-in replacement for compatible SQUARE D load centers requiring a 2-pole, 50-amp circuit breaker.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. De-energize the load center and verify absence of voltage before handling any breaker or wiring. Confirm the load center enclosure accepts THQL-series non-interchangeable breakers before installation. Follow AWG wire size requirements and torque terminal connections per the load center manufacturer specifications.

Technical Specifications

• Current Rating: 50 amps
• Voltage Rating: 120/240 volts AC
• Interrupting Rating: 10 kiloamps
• Number of Poles: 2
• Mounting Type: 1-inch plug-in
• Wire Size: 8 to 3 AWG
• Breaker Type: Non-interchangeable
• Used On: Load center
• Approvals: UL listed (Canada and US)

Standard Information

• Brand: SQUARE D
• Manufacturer Part Number: THQL2150