QOB2301021 - Square D 30 Amp 2 Pole 120/240VAC Bolt-On Miniature Circuit Breaker with Shunt Trip, 10kA Interrupt, QO Series, Thermal Magnetic Trip, UL/CSA Listed

Product Overview

The QOB2301021 is a Square D QO series 2‑pole, 30 amp, 120/240VAC bolt‑on miniature circuit breaker with thermal‑magnetic trip and an integral shunt trip.

Designed for power distribution panels using QO bolt‑on mountings, this breaker carries a 10 kA interrupting rating and is UL and CSA listed.

Key Features

• 2‑pole, 30 A rating for 120/240 VAC systems
• Bolt‑on QO series miniature breaker form factor
• Thermal‑magnetic trip for combined overload and short‑circuit protection
• Integral shunt trip for remote trip/lockout functionality
• 10 kA interrupting rating
• UL and CSA listed

Function and Intended Use

The QOB2301021 provides combined thermal (overload) and magnetic (short‑circuit) protection for branch circuits in 120/240VAC distribution systems. Its 2‑pole design allows simultaneous disconnection of both ungrounded conductors for multi‑wire or split‑phase loads.

• Protects branch circuits up to 30 A
• Used in load centers and distribution panels that accept QO bolt‑on breakers
• Suitable where remote tripping is required via the built‑in shunt trip

Electrical Ratings and Performance

Use this breaker where a 30 amp, 2‑pole protection device is required for 120/240VAC systems and where a 10 kA interrupting rating meets the available fault current.

• Rated current: 30 A
• Voltage: 120/240 VAC
• Interrupting rating: 10 kA

Shunt Trip / Controls

This QO breaker includes an integral shunt trip mechanism to allow remote tripping or electrical lockout when wired to an external control circuit. The shunt trip is commonly used for emergency shutdown, fire panel interlocks, or safety interlocks.

• Integral shunt trip enables remote electrical trip capability
• Requires appropriate external control wiring and supply to operate the shunt trip

Mounting and Physical Compatibility

The QOB2301021 is a bolt‑on miniature breaker in Square D's QO series form factor. Confirm that the equipment or panel accepts QO bolt‑on breakers before ordering.

• Bolt‑on QO series mounting
• 2‑pole physical configuration—mounts as a single two‑pole device in compatible panels

Certifications and Safety Listings

This product is listed for safety by UL and CSA, indicating it meets the applicable North American product safety standards for circuit breakers.

• UL listed
• CSA listed

Before You Order

Confirm the model number and the number of breakers required before ordering. Verify panel compatibility for QO bolt‑on breakers and ensure the 10 kA interrupting rating meets the available fault current at the installation point.

• Confirm QOB2301021 is the exact part required for your panel
• Verify control wiring and voltage for the shunt trip function
• Confirm that a 10 kA interrupting rating is adequate for your site

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for QOB2301021 - Square D 30 Amp 2 Pole 120/240VAC Bolt-On Miniature Circuit Breaker with Shunt Trip, 10kA Interrupt, QO Series, Thermal Magnetic Trip, UL/CSA Listed. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.