Wöhner 03239 Class J time-delay fuse link with a 300 A current rating, 600 V AC rating and high interrupting capacity for industrial electrical protection.
£410.17
The Wöhner 03239 is a premium Class J time-delay fuse link designed to provide reliable overcurrent protection for industrial electrical distribution systems. Manufactured by Wöhner, this industrial fuse protects electrical equipment against overloads and short circuits while ensuring dependable operation in demanding commercial and industrial environments.
Designed for use in standard Class J fuse holders, the Wöhner 03239 features a time-delay operating characteristic that allows temporary motor and transformer inrush currents to pass without unnecessary fuse operation. Its durable porcelain construction and high interrupting capacity make it ideal for protecting industrial control panels, switchboards and power distribution equipment.
With a 300 A current rating, a 600 V AC operating voltage and compliance with UL 248-1 and UL 248-8, the Wöhner 03239 is ideally suited for industrial feeder circuits, OEM machinery and heavy-duty electrical installations.
Class J fuse links provide dependable protection against overloads and short circuits while accommodating temporary inrush currents generated by motors, transformers and other inductive loads. This helps maximise equipment reliability, minimise downtime and improve electrical system safety.
The Wöhner 03239 is widely specified by electrical engineers, OEM manufacturers and panel builders for industrial power distribution applications requiring reliable overcurrent protection and high fault interrupting capability.
| Current | 300 A |
|---|---|
| Manufacturer | Wöhner |
| Model | 03239 |
| Product type | Class J time-delay fuse link |
| Rated current | 300 A |
| Rated voltage | 600 V AC |
| Rated DC voltage | 400 V DC |
| Frequency | 50 / 60 Hz |
| Fuse class | Class J |
| Frame size | Class J 400 A |
| Breaking capacity | 200 kA AC / 100 kA DC |
| Material | Porcelain |
| Halogen free | Yes |
| Dimensions (H × W × D) | 181 × 54 × 54 mm |
| Weight | Approx. 670 g |
| Compliance | UL 248-1, UL 248-8 |
| HS Code | 85361090 |
| Country of Manufacture | Mexico |
The Wöhner 03239 is a Class J time-delay fuse link designed to protect industrial electrical circuits against overloads and short circuits.
The fuse has a 300 A rated current.
The fuse is rated for operation on systems up to 600 V AC and 400 V DC.
Time-delay Class J fuses tolerate temporary motor and transformer inrush currents while providing reliable protection against sustained overloads and high fault currents.
It is commonly installed in industrial control panels, switchboards and feeder circuits using compatible Class J fuse holders.
Wöhner Class J fuse links are trusted worldwide by electrical engineers, panel builders and OEM manufacturers for dependable overcurrent protection in demanding industrial power distribution applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...