Overview
The Bussmann SSU is a traditional receptacle-style fuse holder engineered for straightforward circuit protection. This handy box cover unit fits standard 2-1/4″ outlet boxes and delivers reliable performance in residential and light commercial electrical systems. Built for longevity and ease of maintenance, the SSU is a preferred choice where simple, cost-effective fuse protection is required.
Key Features
- 15A rated capacity at 125 VAC
- Integrated on/off switch control for convenient circuit isolation
- Accepts Type T and Fusetron dual-element fuses
- Rated for motors up to 1/2 HP
- Steel construction for durability
- Fits standard 2-1/4″ handy electrical boxes
Technical Specifications
The SSU provides straightforward electrical specifications suited for light-duty protection:
- Voltage Rating: 125 VAC
- Amperage Rating: 15A
- Motor Compatibility: Up to 1/2 HP
- Box Size: 2-1/4″
- Fuse Type: Type T and Fusetron dual-element
- Switch Control: Yes
- Material: Steel
Typical Applications
The Bussmann SSU is well-suited for:
- Residential branch circuits and hardwired loads
- Small equipment motor protection (1/2 HP and below)
- Basement, garage, and workshop electrical systems
- Retrofit installations in existing handy boxes
- Light commercial appliance branch circuits
Compatibility & Replacements
Compatible With
- Type T Edison-base fuses
- Fusetron dual-element fuses (time-delay design)
- Standard 2-1/4″ handy electrical boxes
- 125 VAC single-phase circuits
- Residential and light commercial electrical panels
Replaces / Drop-In Replacement For
Verify compatibility with your electrical system before ordering. The SSU directly replaces obsolete or damaged fuse holders in matching 2-1/4″ handy box installations.
Works With
- Type T (Edison-base) fuses
- Fusetron FRN-R dual-element fuses
- Standard residential 125 VAC branch circuits
- Typical switch-controlled fused disconnect installations














