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MERSEN FUSE 4A55A1 BNIT55V4
British Standard fuse-link IEC BS88 gG Type A1 550VAC 250VDC 4A BNIT Offset Tag providing full-range protection against overloads and short circuits.
£1.68
Why Choose the Mersen BNIT55V4 BS88 Fuse Link?
The Mersen BNIT55V4 is a compact BS88 gG offset-tag fuse link designed to provide dependable overload and short-circuit protection for low-voltage electrical circuits. Manufactured by Mersen, it delivers effective current limitation to help protect cables, control components, switchgear and connected equipment during electrical fault conditions.
As a general-purpose gG fuse link, the BNIT55V4 provides full-range protection against both sustained overloads and high short-circuit currents. Its offset-tag construction enables secure installation within compatible BS88 fuse holders, fuse-switch disconnectors and industrial control-panel assemblies.
With a rated current of 4 A and an operating voltage of up to 550 V AC, the BNIT55V4 is particularly suitable for control, auxiliary, signalling and low-current distribution circuits where reliable protection and predictable fuse performance are essential.
Key Advantages
- Compact BS88 gG offset-tag fuse link for professional circuit protection.
- 4 A rated current for control, signalling and auxiliary circuits.
- 550 V AC voltage rating for industrial low-voltage installations.
- Provides full-range overload and short-circuit protection.
- Current-limiting operation helps reduce damaging fault energy.
- Offset tags provide secure mounting in compatible BS88 fuse equipment.
Key Features
- Mersen BNIT offset-tag fuse series.
- 4 A rated current.
- 550 V AC rated voltage.
- gG utilisation category for general-purpose protection.
- Compact offset-tag construction.
- Protects cables, control devices and connected electrical equipment.
- Effective current limitation during short-circuit conditions.
- Suitable for industrial and commercial electrical assemblies.
Reliable Protection for Control and Auxiliary Circuits
The Mersen BNIT55V4 protects electrical installations by interrupting excessive current before it can damage conductors, control devices or connected equipment. During an overload or short circuit, the internal fuse element opens the circuit and limits the amount of fault energy allowed to pass downstream.
Its low 4 A rating makes the BNIT55V4 well suited to sensitive auxiliary and control circuits. Correct coordination with cables, contactors and other protective devices can help improve installation reliability, reduce equipment damage and minimise downtime following an electrical fault.
Typical Applications
- Industrial electrical control panels.
- Auxiliary power circuits.
- Signalling and instrumentation circuits.
- Commercial distribution equipment.
- Machinery and automation systems.
- OEM electrical control assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Class | gG | |
|---|---|---|
| Voltage | 550 V | |
| Item number | F1006577 | |
| Catalogue No | BNIT55V4 | |
| Description | British Standard fuse-link IEC BS88 gG Type A1 550VAC 250VDC 4A BNIT Offset Tag | |
| EAN/UPC Code | 3605340484724 | |
| Rated voltage AC IEC | 550 V | |
| Rated voltage DC IEC | 250 V | |
| Ampere Rating | 4 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gG | |
| Fuse Size | A1 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 38 A²s | |
| Melting I2t | 7.6 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 | 14.5 mm | |
| Product Length | 56 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.165 kg | |
| Sell Pack Width | 70 mm | |
| Sell Pack Length | 70 mm | |
| Sell Pack Height | 35 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.0165 kg | |
| Power Dissipation at Rated Current Value | 1.5 W | |
| HS Code | 85361010 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BNIT55V4 used for?
The BNIT55V4 is used to protect low-current electrical circuits, cables, control equipment and connected components against overload and short-circuit currents.
What is the current rating of the BNIT55V4?
The Mersen BNIT55V4 has a rated current of 4 A.
What voltage is the BNIT55V4 rated for?
The fuse link is rated for operation at up to 550 V AC.
What does the gG utilisation category mean?
The gG category indicates that the fuse provides full-range protection against both overload and short-circuit currents in general-purpose electrical circuits.
Can the BNIT55V4 be reused after operation?
No. The BNIT55V4 is a single-use protective device and must be replaced with a correctly rated equivalent after it has operated.
Trusted for Professional Electrical Protection
Mersen BS88 fuse links are trusted by electrical engineers, panel builders and maintenance professionals for dependable fault interruption, effective current limitation and reliable protection in industrial and commercial electrical systems.
