Overview
The Bussmann GMQ-3-2/10 is a time-delay inline fuse engineered for low-voltage circuit protection in industrial electronics, medical equipment, and consumer appliances. This 3.2A, 300VAC supplemental fuse combines slow-blow characteristics with robust size-rejection mounting to prevent accidental overfusing. Its one-piece integral construction and compact cylindrical body make it ideal for panel-mounted installations where space and reliability are critical.
Key Features
- 3.2A current rating, 300VAC voltage rating with 10 kA interrupt capacity
- Time-delay (slow-blow) operation protects against brief load surges and inrush current
- HLQ size-rejection design prevents overfusing and ensures correct fuse selection
- One-piece integral knob-fuse unit—no separate replacement caps required
- UL Listed (Std. 248-14) and CSA Certified (Class 1422-01) for safety compliance
- Wire-terminal construction for reliable electrical contact in holder-based systems
Technical Specifications
- Current Rating: 3.2A (3 2/10 A)
- Voltage Rating: 300VAC
- Interrupt Rating: 10 kA at 300VAC
- Fuse Type: Time-Delay (Slow-Blow), Glass Element
- Series: GMQ (Inline, Low-Voltage, Small-Dimension)
- Body Diameter: 0.72 inches (18.3 mm)
- Body Length: 2.25 inches (57.15 mm)
- Mounting Style: HLQ size-rejection carrier (panel-mounted with optional steel clip)
- Terminal Type: Wire (typically #18 AWG insulated copper)
- Construction: One-piece integral unit, cylindrical ceramic body
- Certifications: UL 248-14, CSA Class 1422-01, CE marked
Typical Applications
- Electronic appliance and small-motor circuit protection
- Medical equipment and diagnostic instrument power supplies
- Low-voltage industrial electronics and control circuits
- Consumer electronics with inrush-current demands (audio amplifiers, power supplies)
- Telecommunications and networking equipment protection
- HVAC and refrigeration system control circuits
Compatibility & Replacements
Compatible With
- HLQ type rejection (size-limiting) fuse carriers and holders
- Panel-mounted fuse blocks rated for GMQ-series fuses
- 300VAC low-voltage circuits requiring supplemental protection
- Electrical equipment and appliances manufactured to UL 248-14 and CSA standards
Replaces / Drop-In Replacement For
- Older Bussmann GMQ-3-2/10 fuses in existing HLQ holders
- Other 3.2A, 300VAC time-delay fuses with identical HLQ rejection geometry
- Verify form-fit-function compatibility with your fuse holder before ordering
Works With
- HLQ rejection fuse carriers (prevents insertion of wrong amperage)
- Standard panel-mount fuse blocks and inline fuse holders
- Wire-terminal receptacles rated for #18 AWG insulated copper conductor
- Electrical systems designed to UL, CSA, and IEC fuse standards
