High-performance BS88 gM fuse-link with central bolted tag terminals, rated for 415 V AC and 240 V DC, suitable for motor and general applications.
£31.10
The Mersen BTC42V100M125 is a robust BS88 gM centre tag fuse-link designed to provide dependable short-circuit protection for industrial motor circuits. Its motor-rated operating characteristic accommodates the temporary inrush currents generated during motor starting while rapidly interrupting dangerous fault currents.
As part of Mersen’s industrial fuse-link range, the BTC42V100M125 provides effective current limitation to reduce the thermal and mechanical stresses placed on cables, switchgear and connected equipment during a short circuit. Its durable construction supports reliable operation in demanding motor control and power distribution environments.
Featuring a 100M125 motor fuse rating and voltage ratings of 415 V AC and 240 V DC, the BTC42V100M125 is suitable for motor control centres, industrial switchboards, machine control panels and OEM equipment. The centre tag format enables secure mounting in compatible BS88 fuse holders and switch-fuse assemblies.
The Mersen BTC42V100M125 is designed to protect motor circuits against high short-circuit currents while tolerating the elevated current drawn during normal motor starting. Its gM characteristic is intended for use alongside a suitable overload protection device, such as a motor protection relay or thermal overload relay.
By limiting peak fault current and let-through energy, the fuse-link helps protect contactors, cables, motor starters and other downstream components. This supports improved electrical safety, reduced equipment damage and greater operational continuity in industrial installations.
| Item number | Q226311 |
|---|---|
| Catalogue No | BTC42V100M125 |
| Description | British Standard fuse-link IEC BS88 gM Type B1 415VAC 240VDC 100M125A BTC Central Bolted Tag |
| EAN/UPC Code | 3605340519969 |
| Rated voltage AC IEC | 415 V |
| Rated voltage DC IEC | 240 V |
| In M Ich | 100M125 A |
| RoHS Compliant | Yes |
| AC or DC | AC/DC |
| Speed/Characteristic | gM |
| Fuse Size | B1 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 78400 A²s |
| Melting I2t | 28000 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 | Central Bolted Tag |
| Product Diameter | 31 mm |
| Product Length | 136 mm |
| Sell Pack Quantity | 10 EA |
| Sell Pack Weight | 1.2 kg |
| Sell Pack Width | 145 mm |
| Sell Pack Length | 195 mm |
| Sell Pack Height | 70 mm |
| Product group | Low Voltage IEC Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.12 kg |
| Power Dissipation at Rated Current Value | 9 W |
| HS Code | 85361090 |
| Country of Manufacture | India |
The BTC42V100M125 is designed to provide short-circuit protection for industrial motors, motor starters and associated electrical equipment.
The 100M125 designation identifies a gM motor fuse-link designed to accommodate motor starting currents while providing short-circuit protection for a coordinated motor circuit.
The fuse-link is rated for operation at up to 415 V AC and 240 V DC.
A gM fuse primarily provides short-circuit protection for motor circuits and should normally be coordinated with a separate overload protection device.
It is typically installed in compatible BS88 fuse holders, motor control centres, switch-fuse units and industrial control panels.
Mersen motor fuse-links are widely selected by electrical engineers, panel builders and OEM manufacturers for dependable fault interruption, effective current limitation and reliable protection in industrial motor control systems.{ "@context": "https://schema.org/", "@type": "Product", "name": "Mersen BTC42V100M125 BS88 gM Centre Tag Motor Fuse", "sku": "BTC42V100M125", "mpn": "BTC42V100M125", "brand": { "@type": "Brand", "name": "Mersen" }, "category": "Industrial Motor Fuse-links", "description": "Mersen BTC42V100M125 BS88 gM centre tag fuse-link with a 100M125 motor rating, designed for industrial motor circuit protection at up to 415 V AC and 240 V DC.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Motor fuse rating", "value": "100M125" }, { "@type": "PropertyValue", "name": "Rated voltage AC", "value": "415 V AC" }, { "@type": "PropertyValue", "name": "Rated voltage DC", "value": "240 V DC" }, { "@type": "PropertyValue", "name": "Fuse characteristic", "value": "gM" }, { "@type": "PropertyValue", "name": "Breaking capacity", "value": "80 kA AC / 40 kA DC" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the Mersen BTC42V100M125 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The BTC42V100M125 is designed to provide short-circuit protection for industrial motors, motor starters and associated electrical equipment." } }, { "@type": "Question", "name": "What does the 100M125 rating mean?", "acceptedAnswer": { "@type": "Answer", "text": "The 100M125 designation identifies a gM motor fuse-link designed to accommodate motor starting currents while providing short-circuit protection for a coordinated motor circuit." } }, { "@type": "Question", "name": "What voltage ratings does this fuse have?", "acceptedAnswer": { "@type": "Answer", "text": "The fuse-link is rated for operation at up to 415 V AC and 240 V DC." } }, { "@type": "Question", "name": "Does a gM fuse provide overload protection?", "acceptedAnswer": { "@type": "Answer", "text": "A gM fuse primarily provides short-circuit protection for motor circuits and should normally be coordinated with a separate overload protection device." } }, { "@type": "Question", "name": "Where is the BTC42V100M125 normally installed?", "acceptedAnswer": { "@type": "Answer", "text": "It is typically installed in compatible BS88 fuse holders, motor control centres, switch-fuse units and industrial control panels." } } ] }
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...