Description
Overview
The Eaton Bussmann 630FMM is a high speed British Standard semiconductor protection fuse from the globally trusted Bussmann series portfolio. Designed for rapid fault interruption in sensitive power electronic equipment, this fuse helps protect expensive semiconductor devices from damaging short-circuit currents.
As part of the BS88 Part 4 fuse family, the 630FMM features a double barrel construction and is widely used in industrial panels, DC drive systems, power converters, and rectifier installations throughout India. Its Class aR characteristics provide superior semiconductor protection while maintaining compatibility with BS88-based switchgear designs.
Key Features
- 630A Current Rating — Suitable for high-current industrial semiconductor protection applications.
- 690VAC Rating — Supports demanding industrial AC power systems.
- 450VDC Capability — Suitable for DC common bus and DC drive applications.
- Class aR Protection — Specifically engineered for semiconductor device protection.
- 200kA AC Breaking Capacity — Provides exceptional fault interruption performance.
- 40kA DC Breaking Capacity — Reliable protection for DC circuits.
- Low Pre-Arc I²t — Helps minimize damage to sensitive semiconductor components.
- Double Barrel Construction — Proven BS88 design used extensively in industrial switchgear.
- IEC 60269-4 Compliance — Internationally recognized semiconductor fuse standard.
- UL Recognized and CE Marked — Suitable for global industrial applications.
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 630FMM |
| EAN | 5027590052351 |
| UPC | 051712836364 |
| Product Type | High Speed British Standard Fuse |
| Series | Eaton Bussmann Series |
| Amperage Rating | 630 A |
| Rated Voltage AC | 690 V AC |
| Rated Voltage DC | 450 V DC |
| Interrupt Rating AC | 200 kA RMS Sym (IEC/UL) |
| Interrupt Rating DC | 40 kA at 450 VDC |
| Fuse Class | Class aR |
| Pre-arc I²t | 45,000 A²s |
| Clearing I²t | 180,000 A²s |
| Watt Losses | 100 W |
| Fuse Indicator | None |
| Barrel Type | Double Barrel |
| Product Dimensions | 112 × 83 × 38 mm |
| Weight | 486 g |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL Recognized, CCC |
| Standards | BS88 Part 4, IEC 60269-4 |
| Application | Semiconductor Protection, DC Common Bus, DC Drives, Power Converters, Rectifiers |
Applications & Selection Guide
The Eaton Bussmann 630FMM is primarily selected for semiconductor protection applications where rapid fault clearing and low let-through energy are critical. Typical installations include variable frequency drives (VFDs), DC drives, rectifier bridges, UPS systems, inverter systems, thyristor assemblies, and power converter equipment.
Across India, panel builders and OEMs use BS88 Part 4 high speed fuses extensively in motor control centers, power distribution systems, industrial automation panels, and process control equipment. Industries including steel manufacturing, textile processing, cement production, automotive manufacturing, pharmaceuticals, food processing, and power generation rely on this style of fuse protection.
The Class aR characteristic provides protection specifically for semiconductor devices while allowing equipment designers to coordinate protection schemes effectively. The low pre-arc and clearing I²t values help reduce thermal stress on costly semiconductor components. Compliance with IEC 60269-4 and BS88 Part 4 standards provides interchangeability with other compliant fuse systems used throughout industrial facilities.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore, Tamil Nadu.
- 100% genuine Eaton Bussmann products with manufacturer-backed support.
- Pan-India delivery covering Mumbai, Delhi, Chennai, Bangalore, Hyderabad, Pune, Kolkata, Ahmedabad, and major industrial zones.
- Technical product selection assistance for OEMs, consultants, contractors, and panel builders.
- Project pricing and bulk supply support available for industrial requirements.
Compatible Products & Accessories
- BS88 High Speed Fuse Holders and Fuse Bases.
- Semiconductor Protection Fuse Mounting Assemblies.
- Industrial Switchgear Fuse Carrier Systems.
- Fuse Pullers and Fuse Handling Accessories.
- Power Converter Protection Assemblies.
- DC Drive Protection Systems.
- Rectifier and UPS Protection Components.
- All compatible accessories available. Contact us to bundle your complete panel assembly requirements.
Frequently Asked Questions
What is the I²t let-through energy of the Eaton Bussmann 630FMM?
The 630FMM has a pre-arc I²t value of 45,000 A²s and a total clearing I²t value of 180,000 A²s. These values help limit thermal and mechanical stress on semiconductor devices during fault conditions.
Can the 630FMM be used for DC drive protection?
Yes. The fuse is specifically designed for DC drives, DC common bus systems, power converters, and rectifier applications. It is rated for 450VDC with a DC breaking capacity of 40kA.
Is the Eaton Bussmann 630FMM compliant with BS88 Part 4?
Yes. The 630FMM is designed and tested to BS88 Part 4 and IEC 60269-4 standards. It is also UL Recognized, IEC Rated, CE Marked, and RoHS compliant.
Does the 630FMM include a fuse holder or fuse base?
No. The fuse holder or fuse base is supplied separately. The 630FMM is supplied as the fuse link only and should be installed in a compatible BS88 fuse mounting arrangement.
What industries commonly use the 630FMM fuse?
This fuse is widely used in steel plants, textile mills, cement factories, automotive manufacturing facilities, pharmaceutical plants, power generation systems, UPS installations, and industrial automation panels throughout India.
How do I order the Eaton Bussmann 630FMM from Shansen Enterprises?
You can submit a WhatsApp inquiry or email request with your required quantity and application details. Shansen Enterprises, Coimbatore supplies genuine Eaton Bussmann products with pan-India delivery support for OEMs, panel builders, contractors, and industrial end users.
