Overview
The Gould Shawmut A4BX600 is a Type 150 Amp-Trap welder protector fuse engineered for heavy-duty welding power supplies and related high-amperage circuits. Rated for 600A continuous at 600V AC, this Class K current-limiting fuse delivers millisecond-speed protection against overcurrent and short-circuit conditions common in welding equipment. Ferraz Shawmut (formerly Gould Shawmut) has established a reputation for reliable fuse design in industrial power distribution, making this part a trusted choice for welding operations and similar demand-side applications.
Key Features
- 600A / 600V AC rating for high-amperage welding circuits
- Type 150 Class K current-limiting design for fast-acting protection
- Amp-Trap® technology minimizes let-through current and I²t stress
- Compact form factor fits Class K fuse holders and clips
- Renewable link construction for lower replacement costs
- UL and CSA recognized per ANSI/NEMA standards
Technical Specifications
- Manufacturer: Gould Shawmut / Ferraz Shawmut
- Part Number: A4BX600
- Current Rating: 600A
- Voltage Rating: 600V AC
- Type: Type 150 (Welder Protector)
- Class: K (Class K dimensions)
- Technology: Amp-Trap® current-limiting
- Link Type: Renewable
- Standards: UL, CSA, ANSI/NEMA
- Application: Welding equipment, heavy-duty power distribution
Typical Applications
- Welding power supply main protection
- Industrial arc and resistance welder feeders
- Heavy-amperage branch circuits (400A–600A+)
- Battery charger and high-current DC supply circuits
- Large motor starting circuits
Compatibility & Replacements
Compatible With
- Class K fuse holders and cartridge clips (standard 600V industrial)
- Welding power supply disconnect switches
- Panel-mounted and bolt-down fuse blocks rated 600V
- Welding equipment main and branch protection enclosures
Replaces / Drop-In Replacement For
Verify compatibility with your equipment manufacturer or system integrator before ordering. A4BX series fuses are direct replacements for equivalent Gould Shawmut or earlier Ferraz Shawmut Type 150 welder protector fuses in Class K form factor.
Works With
- Class K fuse block receptacles and blade clips
- Industrial power distribution standards (NEC Article 240, UL 248)
- 600V AC single-phase and three-phase circuits
- Standard industrial fuse puller tools
