Overview
The Gould ITE BQ1-B020 is a 1-pole, 20-ampere thermal-magnetic molded-case circuit breaker designed for overcurrent protection in low-voltage AC electrical systems. The BQ1-B020 is a 1-pole, 20 amp thermal-magnetic molded-case circuit breaker designed for overcurrent protection in low-voltage AC electrical systems. This breaker is rated 120/240V, Type BQ, and features 1-pole configuration. As a long-established component in the Siemens/ITE Gould family, the BQ1-B020 remains a popular choice for replacement applications and maintenance upgrades where proven reliability is essential.
Key Features
- Thermal-magnetic trip mechanism that combines heat-sensitive overload protection with an instantaneous magnetic element for rapid response to short-circuit conditions
- 10kA@120V interrupting capacity, ensuring safe interruption of high-fault currents under normal service conditions
- Bolt-on mounting connection with load-side lugs, providing a secure interface with panelboard bussing systems
- Manual toggle operation, ON/OFF control, and manual reset after trip events
- SWD, HID, and HACR rated for lighting and HVAC loads
- LI (Long-Time and Instantaneous) functions for dependable performance across typical residential or light commercial load profiles
Technical Specifications
- Ampere Rating: 20 A
- Pole Configuration: 1 Pole
- Voltage Rating: 120/240V AC
- Trip Type: Thermal-Magnetic
- Interrupting Capacity: 10 kAIC @ 120V
- Mounting Type: Bolt-On
- Trip Functions: Long-Time (LI) and Instantaneous
- Terminal Type: Load-side lugs
- Wire Size: Accepts 14–6 AWG copper or 12–6 AWG aluminum
- Frame Designation: BQ (Type BQ)
- Breaker Frame Size: Standard panelboard bolt-on
Typical Applications
The Gould ITE BQ1-B020 is suitable for:
- Residential main service panels and branch circuits
- Light commercial panelboards and feeders
- Lighting and HVAC protection circuits
- General-purpose 120/240V load distribution
- Maintenance and replacement installations in existing Siemens P1, P2, and P3 panelboards
Compatibility & Replacements
Compatible With
- Siemens P1, P2, and P3 panelboards
- ITE/Gould legacy panelboards (bolt-on breaker slots)
- Standard 120/240V AC single-phase electrical systems
- Panelboards requiring Type BQ thermal-magnetic breakers
Replaces / Drop-In Replacement For
- Previous generation ITE/Gould BQ1-B020 units
- OEM replacement for equivalent 20A 1-pole Type BQ breakers in ITE heritage systems
- Other Siemens BQ series 20A 1-pole configurations in compatible panelboards
Works With
- Siemens panelboard systems with bolt-on breaker accommodation
- Standard residential and commercial 120/240V AC distribution wiring
- HVAC and lighting load control circuits
- Manual electrical system operation and maintenance workflows
