Overview
The Bussmann SOY-B is a dual-cover Fusetron fuse box cover unit that provides low-cost supplemental fuse protection for small motor circuits and fractional horsepower loads. Designed for installation in standard 4-inch square electrical boxes, the SOY-B offers reliable overcurrent protection below the branch circuit level, making it ideal for controlling and protecting dual motor applications with Edison-base plug fuses.
Key Features
- Dual fuse holder design for protecting two motors simultaneously
- Screw-in Edison-base plug fuse receptacles with protective lids to prevent accidental contact
- Low-cost supplemental protection for circuits requiring protection below main breaker rating
- Fits standard 4-inch square electrical boxes
- Compatible with Type T, TL, TC, P, and W Edison plug fuses
Technical Specifications
- Voltage Rating: 125V AC
- Current Rating: 15 Amp
- Motor Horsepower Rating: 3/4 HP
- Box Type: 4-inch square
- Fuse Base: Edison-type screw-in plug fuses
- Holder Configuration: Double fuse holder (2-cavity)
- Agency Certification: CE
- Mounting: Standard electrical box installation
Typical Applications
- Fractional horsepower dual-motor control circuits at 125V single-phase
- General supplemental protection for small motor circuits
- Power tools, pumps, and HVAC blower protection
- Equipment requiring dual independent fuse protection in standard electrical boxes
- Industrial and residential small-load overcurrent protection
Compatibility & Replacements
Compatible With
- Edison-base Type T, TL, TC, P, and W plug fuses
- Bussmann dual-element fuses for motor circuit protection
- Standard 4-inch square electrical boxes
- 125V AC single-phase circuits up to 15A
Replaces / Drop-In Replacement For
- Bussmann SOY (single-cavity version) — upgrade to dual protection
- Similar vintage Edison-base box cover units with dual holders
Works With
- Bussmann Type T and TL dual-element fuses
- Standard Edison plug base fuses (Type T, TC, P, W)
- Industrial motor control systems using plug fuses
- Supplemental circuit protection schemes below main branch-circuit device
