Eaton BQL350 Thermal Magnetic Circuit Breaker - 10 kAIC
Part Number: BQL350
Quick Summary
The Eaton BQL350 thermal magnetic circuit breaker protects electrical systems with 50 A capacity in three-pole configurations. In many control panels, replacing worn breakers with a compatible classic unit prevents nuisance trips and downtime. Its HACR rating supports HVAC and similar load types, and it carries a 10 kAIC interrupt rating at 120/240 VAC, enabling robust protection. Designed for straightforward compatibility with Eaton's BQL family, this model offers reliable performance for industrial automation, machine control, and panel modernization, delivering long-term reliability, predictable trip behavior, and easier sourcing for spare parts.
Product Information
Extended Description
BQL350 Eaton: BQL Classic Replacement Circuit Breakers, 50A, #14-8 AWG, Cu/Al, Three-pole, 10 kAIC at 120/240V
Product Name
Eaton BAB thermal magnetic circuit breaker
Catalog Number
BQL350
UPC
782114304150
Product Length/Depth
5 in
Product Height
3 in
Product Width
3 in
Product Weight
0.5 lb
Compliances
HACR Rated
Circuit breaker type
BQL
Number of poles
Three-pole
Type
Classic replacement circuit breaker
Wire size
#14-8 AWG Cu/Al
Amperage Rating
50 A
Interrupt rating
10 kAIC at 120/240 Vac
Voltage rating
120/240 V
Feature → Business Impact → Application: The 50 A amperage rating provides precise overcurrent protection for 3-phase feeders, reducing equipment damage and unplanned downtime in industrial automation environments. This translates to lower maintenance costs and improved system availability for machine controls and panel boards. Feature → Business Impact → Application: Three-pole construction supports standard three-phase power distribution, enabling straightforward replacement in existing Eaton BQL panels and minimizing retrofit effort during panel modernization projects. Feature → Business Impact → Application: Wire size compatibility with #14-8 AWG Cu/Al ensures reliable terminations in both copper and aluminum installations, lowering wiring errors and ensuring compliant connections in HVAC and process control systems. Feature → Business Impact → Application: 10 kAIC interrupt rating at 120/240 VAC delivers fast, reliable fault interruption, improving protection for motors and contactors in high‑inrush applications. Feature → Business Impact → Application: HACR-rated certification aligns protection with HVAC equipment, reducing risk when panels serve air handlers or climate control units and supporting compliance in industrial facilities. Feature → Business Impact → Application: Classic replacement design and 5×3×3 footprint simplify sourcing and installation, enabling quick swaps in aging installations and reducing downtime during modernization efforts.
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FAQs
The BQL350 is designed as a classic replacement circuit breaker in Eaton's BQL family and fits standard three-pole panels that support BQL-type breakers. It accepts wires in #14-8 AWG Cu/Al, and it works with common Eaton accessories used for BQL installations, simplifying retrofits and spare parts management in control panels.
The BQL350 is a 50 A, three-pole thermal magnetic circuit breaker with a 10 kAIC interrupt rating at 120/240 VAC. It is HACR rated and compatible with #14-8 AWG Cu/Al conductors, providing reliable protection for three-phase circuits in industrial environments.
Yes. The BQL350 is a three-pole device intended for three-phase systems, including machine controls and HVAC-related loads. Its 50 A rating and 10 kAIC interrupt capability make it suitable for protecting motors, contactors, and feeders in automation panels while tolerating typical inrush conditions.
The BQL350 is HACR rated, aligning with code requirements for HVAC equipment protection. It is intended for industrial panel applications where HACR compliance is required. Other standards or certifications are not listed in the provided data, so confirm your facility’s certification needs during procurement.
As a classic replacement breaker from Eaton, the BQL350 supports straightforward field replacement, reducing downtime during maintenance and panel modernization. Its robust 10 kAIC interrupt rating and compatible wiring (Cu/Al #14-8) contribute to long-term reliability and lower spares inventory, delivering a favorable return on investment for mid-range to high-demand electrical assemblies.