Why Choose the Mersen H1003957 BJU42V630SD BS88 Feeder Pillar Fuse?
The Mersen H1003957 (BJU42V630SD) is a high-performance BS88 gU feeder pillar fuse link designed to protect street lighting networks, distribution pillars and other low voltage electrical systems against overload and short-circuit currents. Rated at 630 A and 415 V AC, it is the highest-current fuse link listed within Mersen's BJU feeder pillar range.
Mersen designs its feeder pillar fuse links for use with wedge-type fuse carriers in electricity supply and infrastructure applications. The BJU42V630SD has 92 mm fixing centres and combines rapid fault isolation with strong current-limiting performance, helping reduce thermal and mechanical stress on cables, switchgear and connected equipment.
With an 80 kA AC breaking capacity, gU utilisation category and ceramic body construction, the H1003957 provides dependable protection in demanding utility and industrial environments. The range is manufactured in accordance with EN 60269-2 and BS88-2.
Key Advantages
- Heavy-duty 630 A BS88 feeder pillar fuse link.
- 415 V AC rated voltage for low voltage distribution systems.
- 80 kA AC breaking capacity for high prospective fault currents.
- Current-limiting operation helps reduce fault energy.
- Provides immediate isolation during qualifying fault conditions.
- Designed for wedge-type carriers with 92 mm fixing centres.
- Supports reliable coordination within street lighting and utility networks.
- Ceramic body construction for robust electrical performance.
Key Features
- Mersen BJU feeder pillar fuse range.
- Catalogue reference: BJU42V630SD.
- Item number: H1003957.
- Rated current: 630 A.
- Rated voltage: 415 V AC.
- Utilisation category: gU.
- Rated breaking capacity: 80 kA AC.
- Fixing centres: 92 mm.
- Power dissipation at rated current: 39 W.
- Suitable for wedge-type fuse carriers.
Reliable Protection for Heavy-Duty Distribution Networks
The Mersen H1003957 is engineered for electrical networks where high continuous current capability and rapid fault interruption are essential. During a short circuit, its current-limiting action helps restrict the peak current and total energy passed into downstream conductors and equipment.
Correct fuse selection can improve coordination, enable immediate isolation and support fire safety within street lighting and electricity supply installations. The fuse rating, carrier compatibility and circuit characteristics should always be verified by a qualified electrical professional before installation.
Typical Applications
- Street lighting feeder pillars.
- Electricity supply distribution pillars.
- Open-type substation boards.
- Heavy-duty service cut-outs.
- Underground disconnecting boxes.
- Low voltage utility distribution systems.
- Industrial power distribution equipment.
