Overview
The Gould Shawmut OTS35 is a Class K5 general-purpose fuse rated for 35 amps at 600VAC, designed to protect feeder and branch circuits serving lighting, heating, and other non-motor loads. Manufactured by Ferraz Shawmut (now Mersen), this one-time fuse delivers cost-effective circuit protection with proven reliability in industrial and commercial applications.
Key Features
- Class K5 Fast-Acting Design: One-time fuse with fast response to overcurrent conditions, ensuring circuit disconnection upon fault
- High Interrupting Rating: Safely interrupts available short-circuit currents up to 50,000 amperes
- UL/CSA Listed: Meets North American safety standards for use in AC power systems
- Compact Form Factor: Fits standard fuse holders with minimal installation footprint
- Low-Cost Protection: General-purpose design ideal for applications not requiring time-delay characteristics
Technical Specifications
- Voltage Rating: 600VAC (300VDC rated)
- Current Rating: 35 amps
- Fuse Class: K5 (General Purpose, One-Time)
- Interrupting Capacity: 50,000 amperes
- Response: Fast-acting (one-time)
- Standards: UL 248, CSA
- Manufacturer: Ferraz Shawmut (Mersen)
Typical Applications
- Feeder circuits for lighting and heating loads
- Branch circuits in industrial control panels
- General machinery protection in manufacturing facilities
- Commercial building power distribution systems
- Non-motor load circuit protection where fast response is required
- Equipment replacement in existing 600V AC systems
Compatibility & Replacements
Compatible With
- Standard Edison-base or cartridge fuse holders rated for 600VAC Class K fuses
- Industrial motor control centers (MCCs) with Class K fuse receptacles
- Power distribution panels and switchboards designed for 600V AC
- Any 600VAC feeder or branch circuit application requiring 35A overcurrent protection
Replaces / Drop-In Replacement For
- Gould OTS35 (earlier designation)
- Ferraz OTS35
- Mersen OTS35
- Shawmut OTS35 (original Shawmut brand)
Works With
- Standard 600VAC power systems and industrial electrical distribution equipment
- Compatible with any electrical system designed for Class K5 fuses at 35A rating
- No special software or protocols required—mechanical/electrical drop-in replacement
