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MERSEN FUSE BNIT55V20M25 A1 BNIT55V20M25
British Standard fuse-link IEC BS88 gM Type A1 550VAC 250VDC 20M25A BNIT Offset Tag offering reliable circuit protection with high breaking capacity and robust construction.
£2.03
Why Choose the Mersen BNIT55V20M25 BS88 gM Fuse Link?
The Mersen BNIT55V20M25 is a high-performance BS88 offset tag fuse link engineered to provide reliable short-circuit protection for industrial motor circuits and associated electrical equipment. Manufactured by Mersen, this gM motor protection fuse is designed for motor control centres, switchgear, distribution boards and OEM machinery where dependable fault protection is essential.
Manufactured in accordance with EN 60269-2 and BS88 Part 2, the BNIT55V20M25 is designed specifically for motor protection applications. Its gM characteristic allows normal motor starting currents to pass while rapidly interrupting damaging short-circuit faults, helping to protect motors, cables, contactors and associated equipment.
Featuring a 20M25 A motor fuse rating with 550 V AC and 250 V DC ratings, this Type A1 offset tag fuse link is suitable for installation in compatible fuse holders, fuse switch disconnectors and directly onto busbars in industrial power distribution systems.
Key Advantages
- Designed for industrial motor short-circuit protection.
- 20M25 A gM motor protection rating.
- 550 V AC / 250 V DC rated operation.
- Allows motor starting currents without nuisance operation.
- Excellent current-limiting performance reduces fault energy.
- Offset tag design enables secure installation in compatible BS88 fuse assemblies.
Key Features
- Mersen BNIT series offset tag fuse link.
- gM motor protection characteristic.
- 20M25 A motor fuse rating.
- 550 V AC / 250 V DC rated voltage.
- BS88 Type A1 offset tag construction.
- Suitable for bolting directly to busbars or compatible fuse holders.
- High breaking capacity for industrial applications.
- RoHS compliant.
Reliable Protection for Industrial Motor Circuits
gM fuse links are specifically designed to protect motors against short-circuit faults while allowing the high inrush currents generated during motor starting. They are typically coordinated with an overload relay to provide complete motor protection and help minimise damage to electrical equipment during fault conditions.
The Mersen BNIT55V20M25 combines excellent current limitation with a compact BS88 offset tag design, making it suitable for industrial switchgear, motor starters and power distribution systems where dependable protection is required.
Typical Applications
- Industrial motor control centres.
- Motor starter circuits.
- Industrial switchgear.
- Fuse switch disconnectors.
- OEM machinery and automation equipment.
- Industrial power distribution systems.
Technical Specifications
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| Fuse Class | gM | |
|---|---|---|
| Voltage | 550 V | |
| Item number | J1019230 | |
| Catalogue No | BNIT55V20M25 | |
| Description | British Standard fuse-link IEC BS88 gM Type A1 550VAC 250VDC 20M25A BNIT Offset Tag | |
| EAN/UPC Code | 3605340515893 | |
| Rated voltage AC IEC | 550 V | |
| Rated voltage DC IEC | 250 V | |
| In M Ich | 20M25 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gM | |
| Fuse Size | A1 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 2100 A²s | |
| Melting I2t | 420 A²s | |
| AC Max I.R./Breaking Capacity | I1: 80 kA | |
| Max. Rated Breaking Capacity DC | 40 kA | |
| Connection/Terminal Material | Tin-Plated Copper | |
| Connection/Terminal Type | Offset Tag | |
| Product Diameter | 13.5 mm | |
| Product Width | 14.5 mm | |
| Product Length | 56 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.16 kg | |
| Sell Pack Width | 65 mm | |
| Sell Pack Length | 70 mm | |
| Sell Pack Height | 30 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.016 kg | |
| Power Dissipation at Rated Current Value | 1.6 W | |
| HS Code | 85361050 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BNIT55V20M25 used for?
The Mersen BNIT55V20M25 is a BS88 gM fuse link designed to provide short-circuit protection for industrial motors and associated electrical circuits.
What does the 20M25 rating mean?
The 20M25 A designation identifies the fuse as a gM motor protection fuse designed to tolerate normal motor starting currents while providing rapid short-circuit protection.
What voltage is the fuse rated for?
The fuse is rated for operation up to 550 V AC and 250 V DC.
Does this fuse provide motor overload protection?
No. A gM fuse primarily provides short-circuit protection and should normally be used alongside a suitable overload relay or motor protection device.
Where is the BNIT55V20M25 typically installed?
It is commonly installed in compatible BS88 fuse holders, fuse switch disconnectors, busbar assemblies and industrial motor control equipment.
Trusted by Electrical Engineers Worldwide
Mersen BS88 motor fuse links are widely specified by electrical engineers, panel builders and OEM manufacturers for dependable fault protection, high interruption capability and reliable industrial motor circuit protection.
