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MERSEN FUSE BFF125A4W BFF125A4W/1
The BFF125A4W fuse-holder provides reliable and secure accommodation for A4 British Standard fuses in demanding industrial and commercial applications. Engineered for front-front connection, it supports up to 690VAC, ensuring safe and efficient circuit protection in high-voltage environments.
£35.20
Why Choose the Mersen D239111 BS Fuse Holder?
The Mersen D239111, catalogue number BFF125A4W, is a robust British Standard fuse holder designed for dependable overcurrent protection in industrial and commercial low-voltage electrical systems. Manufactured by Mersen, this single-pole holder is designed for A4-size BS fuse links and provides a secure, serviceable connection within power distribution and control equipment.
The D239111 features a convenient front-front terminal configuration, allowing both conductors to be connected from the front of the unit. This arrangement supports efficient wiring and maintenance within electrical panels, while the fully shrouded cable terminals provide an IP2X classified design that helps prevent inadvertent contact with live metal when the removable fuse carrier is withdrawn.
With a rated current of 125 A and voltage ratings of 690 V AC and 460 V DC, the Mersen D239111 is suitable for switchboards, motor control centres, distribution panels and industrial machinery. Its white polyamide housing, DIN rail mounting format and compliance with BS88 requirements make it a practical choice for panel builders, electrical contractors and OEM manufacturers.
Key Advantages
- Designed for A4-size British Standard fuse links.
- 125 A rated current for industrial power distribution.
- 690 V AC and 460 V DC voltage ratings.
- Front-front terminal arrangement supports accessible panel wiring.
- IP2X classified construction helps protect against accidental contact.
- DIN rail mounting enables straightforward enclosure installation.
Key Features
- Mersen BS fuse-holder series.
- Item number: D239111.
- Catalogue number: BFF125A4W.
- 125 A ampere rating.
- 690 V AC / 460 V DC rated voltage.
- Compatible with A4-size BS fuse links.
- Single-pole configuration.
- Front-front connection terminals.
- White polyamide insulating body.
- RoHS compliant construction.
Reliable Protection for Industrial Power Systems
The Mersen D239111 provides the secure mechanical and electrical connection required between an A4 fuse link and the protected circuit. Its robust contacts support dependable electrical continuity, allowing the installed fuse link to interrupt damaging overload and short-circuit currents when required.
The insulated polyamide body and shrouded terminal design help improve maintenance safety, while the front-front connection arrangement provides convenient access for conductor installation. These characteristics make the D239111 well suited to modern switchgear, control panels and industrial power distribution systems.
Typical Applications
- Industrial switchboards and switchgear.
- Power distribution panels.
- Motor control centres.
- Machine control cabinets.
- Industrial automation equipment.
- OEM electrical and power systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole | |
| Voltage | 690 V | |
| Item number | D239111 | |
| Catalogue No | BFF125A4W | |
| Description | British Standard Fuse-Holder A4 Front-Front 690VAC White | |
| EAN/UPC Code | 3605340446340 | |
| Rated voltage AC IEC | 690 V | |
| Rated voltage DC IEC | 460 V | |
| Ampere Rating | 125 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Fuse Size | A4 | |
| Fuse Type/Class | BS | |
| Design Details | White | |
| Number of Poles | 1-pole | |
| Wiring range | 1-70mm² | |
| Connection/Terminal Type | Front-Front | |
| Torque Rating | 4 Nm | |
| Housing Material | Polyamide | |
| Installation Mounting | DIN rail | |
| Product Width | 48.9 mm | |
| Product Length | 97.8 mm | |
| Product Height | 134 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.632 kg | |
| Sell Pack Width | 60 mm | |
| Sell Pack Length | 180 mm | |
| Sell Pack Height | 105 mm | |
| Product group | Fuse Holders | |
| Body/Insulating Material | Polyamide | |
| Product Weight | 0.632 kg |
Frequently Asked Questions
What is the Mersen D239111 used for?
The D239111 is used to mount and connect A4-size British Standard fuse links in industrial and commercial low-voltage electrical systems.
What current rating does the D239111 support?
The fuse holder has a rated current of 125 A.
What voltage ratings does this fuse holder have?
The Mersen D239111 is rated for 690 V AC and 460 V DC.
How are cables connected to the D239111?
The holder uses a front-front terminal configuration, allowing both cable connections to be accessed from the front of the unit.
Does the D239111 provide protection against accidental contact?
Yes. The holder is IP2X classified, and its cable terminals remain fully shrouded when the fuse carrier is removed.
Trusted for Industrial Circuit Protection
Mersen British Standard fuse holders are widely specified by panel builders, electrical engineers and OEM manufacturers for reliable, serviceable and standards-compliant protection of low-voltage power distribution systems.
