Description
Overview
The Eaton Bussmann 200FM is a high-speed, single-barrel BS88 semiconductor protection fuse rated 200 A at 690 V AC and 450 V DC, part of the trusted Bussmann FM Series. Built to Class aR performance per BS88 Part 4 and IEC 60269-4, this fuse provides extremely fast fault interruption — protecting sensitive semiconductor devices that standard fuses cannot safeguard within their safe I²t limits. CE marked, RoHS compliant, IEC rated, and UL recognized, the 200FM meets the compliance requirements of modern industrial power electronics across India and globally.
Key Features
- High-Speed Class aR Performance — Interrupts fault currents before semiconductors exceed their I²t withstand ratings, preventing irreversible device damage
- 200 kA Breaking Capacity — Handles the highest prospective fault currents found in industrial power systems up to 200 kA
- Dual Voltage Rating — Rated 690 V AC and 450 V DC, supporting both AC-fed and DC bus semiconductor protection applications
- Single-Barrel BS88 Form Factor — Compact, industry-standard British Standard body for straightforward panel integration and direct replacement
- IEC 60269-4 Compliant — Meets the international standard specifically governing high-speed fuses for semiconductor protection
- CE Marked & RoHS Compliant — Ready for CE-marked panel assemblies and compliant with hazardous substance regulations
- IEC Rated & UL Recognized — Dual certification broadens application scope for export machinery and multi-standard installations
- Bussmann FM Series Reliability — Backed by Eaton’s decades of semiconductor fuse engineering, trusted in critical drive and converter panels worldwide
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 200FM |
| Series | Bussmann FM |
| Fuse Type | High Speed British Standard, Single Barrel |
| Fuse Class | Class aR |
| Amperage Rating | 200 A |
| Rated Voltage AC | 690 V |
| Rated Voltage DC | 450 V |
| Breaking Capacity | 200 kA |
| Standard | BS88 Part 4, IEC 60269-4 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL Recognized |
| Application | Semiconductor protection, DC drives, VFDs, power converters, rectifiers, soft starters, thyristor stacks, DC common bus |
Applications & Selection Guide
The 200FM is specified wherever semiconductor devices — thyristors (SCRs), diodes, IGBTs, and MOSFETs — must be protected from overcurrent faults faster than conventional fuses allow. It is the correct choice for AC drives (VFDs), DC motor drives, soft starters, rectifier bridges, power converters, and thyristor stacks operating on 690 V AC distribution or 450 V DC common bus systems. At 200 A, it suits medium to large power stacks where semiconductor junction temperatures must stay within safe bounds during any fault event.
Class aR fuses are range-rated semiconductor fuses — they are not intended to provide overload protection but are optimised entirely for fault current limitation with minimal I²t let-through. Always coordinate the 200FM with an upstream Class gG or gR fuse or circuit breaker that handles the overload range. Verify that the fuse’s I²t characteristics are within the semiconductor manufacturer’s stated withstand ratings before finalising your BOM.
In India, the 200FM is widely used in wind and solar inverter manufacturers in Coimbatore, Chennai, and Pune; textile mill drive panels across Tamil Nadu; steel plant rectifier systems in Jharkhand and Odisha; and OEM panel builders supplying the automotive, chemical, and water treatment sectors. Shansen Enterprises stocks and sources Bussmann FM Series fuses for prompt delivery to any location in India.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine product guaranteed
- 100% authentic Eaton Bussmann stock supplied with manufacturer warranty
- Pan-India delivery — Tamil Nadu, Maharashtra, Gujarat, Delhi NCR, and beyond
- WhatsApp technical support for fuse selection, I²t coordination, and sizing queries
- Bulk and project pricing available for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann FM Series fuse holders and fuse bases (matching single-barrel BS88 format)
- Upstream Class gG NH fuse links for overload range coverage and system coordination
- Eaton Bussmann indicator accessories and blown-fuse signal units for panel alarm integration
- Eaton drive and soft starter product range (PowerXL, S811, DE1 series)
- Copper busbars, DIN rail mounting adapters, and cable lugs for 200 A rated assemblies
Frequently Asked Questions
What is the difference between a Class aR fuse and a Class gG fuse for semiconductor protection?
A Class gG fuse is a general-purpose full-range fuse that protects cables and equipment against both overloads and short-circuit faults. A Class aR fuse, such as the Eaton Bussmann 200FM, is a range-rated high-speed fuse optimised exclusively for short-circuit protection of semiconductor devices. Class aR fuses interrupt fault currents in microseconds — far faster than Class gG types — keeping the I²t let-through energy within the safe withstand limits of thyristors, diodes, and IGBTs. For semiconductor applications, Class aR fuses must always be used in combination with a separate overload protection device upstream.
Can the Eaton Bussmann 200FM be used on a 450 V DC common bus drive system?
Yes. The 200FM carries a rated DC voltage of 450 V, making it suitable for DC common bus architectures, battery energy storage interfaces, and regenerative drive systems operating at up to 450 V DC. Always confirm that the actual DC bus voltage under worst-case conditions does not exceed this rating and verify the DC breaking capacity requirements for your specific application before installation.
What breaking capacity does the Eaton Bussmann 200FM provide?
The 200FM is rated at a breaking capacity of 200 kA. This means it can safely interrupt prospective fault currents up to 200 kA without rupture or hazard, which covers the fault levels encountered in most industrial medium-voltage-fed LV systems. Verify the prospective short-circuit current at the point of installation using a proper fault level study before selecting any fuse.
Which semiconductor applications is the Eaton Bussmann 200FM suitable for?
The 200FM is designed for semiconductor protection in DC drives, variable frequency drives (VFDs), power converters, rectifier bridges, soft starters, thyristor stacks (SCR assemblies), and DC common bus systems. It is suitable anywhere that fast I²t-limiting protection is required to keep sensitive power semiconductor junction temperatures within safe operating limits during a fault event.
Is the Eaton Bussmann 200FM compliant with IEC and UL standards?
Yes. The 200FM is IEC rated per BS88 Part 4 and IEC 60269-4, CE marked, and RoHS compliant. It is also UL Recognized, which supports its use in export machinery and equipment requiring UL documentation. This dual compliance makes it well-suited for Indian panel builders who supply equipment to both domestic and international markets.
How do I order the Eaton Bussmann 200FM from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 200FM directly through Shansen Enterprises by clicking the WhatsApp button on this page or by sending an email inquiry using the contact form. Please mention the catalog number 200FM, required quantity, and your delivery location anywhere in India. Our team in Coimbatore will respond with pricing, availability, and lead time promptly. Bulk orders and project-based requirements are welcome — we offer competitive pricing for panel builders and OEMs across India.
