Description
Overview
The Eaton Bussmann ED400 is a bolted-type, BS88 Part 2 / IEC 60269-2 compliant fuse link rated 400 A at 415 V AC with an impressive 80 kA symmetrical breaking capacity. Designed as part of the Bussmann TSM series, the ED400 features a BS Size B4 body with a centre tag single slot termination, enabling straightforward integration into standard switchgear and distribution equipment. Its Class gG rating makes it suitable for general-purpose protection of cables, busbars, and associated equipment in industrial and commercial electrical systems throughout India.
Key Features
- High Breaking Capacity — 80 kA — handles severe prospective fault currents found in large LV installations without catastrophic failure
- Class gG Rating — provides full-range overcurrent protection from small overloads through to maximum prospective short-circuit currents
- BS88 Part 2 / IEC 60269-2 Compliance — ensures interchangeability and safety conformance in IEC-standard switchgear used across India and globally
- BS Size B4 Body with Centre Tag Single Slot — standardised physical form for simple retrofit and new-panel integration with compatible fuse bases
- 415 V AC System Rating — matched to India’s standard three-phase LV distribution voltage, eliminating derating concerns in typical applications
- CE Marked and RoHS Compliant — confirms product meets European safety directives and hazardous substance restrictions, preferred by export-oriented OEMs
- IEC Certified — independently verified performance to IEC 60269-2, supporting panel builder documentation and third-party audits
- Bussmann TSM Series Build Quality — precision-manufactured fuse element with consistent time-current characteristics for predictable selective coordination
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | ED400 |
| Series | Bussmann TSM |
| Fuse Category | BS88 Type Fuse Link |
| Fuse Type | Bolted Type |
| BS Size | B4 |
| Tag Type | Centre Tag Single Slot |
| Amperage Rating | 400 A |
| Rated Voltage | 415 V AC |
| Voltage Range | 415 V AC System |
| Breaking Capacity | 80 kA |
| Fuse Class | Class gG |
| Standard | BS88 Part 2, IEC 60269-2 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated |
| Delivery Class | TSM |
| Application | General purpose circuit protection — low voltage switchgear panels, motor control centres, distribution boards |
Applications & Selection Guide
The ED400 is the correct selection for general-purpose overcurrent and short-circuit protection in 415 V AC low voltage systems where the prospective short-circuit current at the point of installation does not exceed 80 kA. Typical installations include main and sub-main distribution boards, low voltage motor control centres (MCCs), busbar protection, and incoming/outgoing feeder protection in industrial switchgear. The bolted termination style and B4 body size must be matched to a compatible BS88 fuse base or switch-fuse unit — confirm your existing equipment’s fuse base catalogue reference before ordering.
Class gG fuses provide full-range general-purpose protection and are distinct from Class gM (motor-rated) or Class aM (motor starting) fuses. For applications with frequent high-inrush motor starting, consult Shansen Enterprises to evaluate whether a Class gM or aM fuse would better prevent nuisance tripping while maintaining downstream protection coordination. The ED400’s 400 A rating is commonly applied at distribution panel incomers and large feeder outgoings in Indian industrial facilities.
Industries in India that routinely specify BS88 bolted fuse links at this current rating include cement plants, textile mills, automobile component manufacturers, food processing units, pharmaceutical facilities, and large commercial complexes in cities such as Coimbatore, Chennai, Pune, and Mumbai. The IEC 60269-2 standard compliance means the ED400 is accepted by major electrical inspectorates across Indian states and aligns with Bureau of Indian Standards references for LV protection equipment.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products with full traceability
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty
- Pan-India delivery from Coimbatore — Tamil Nadu, Maharashtra, Gujarat, Karnataka, and beyond
- WhatsApp technical support for product selection, coordination studies, and compatibility queries
- Competitive bulk pricing for panel builders, switchgear OEMs, EPC contractors, and industrial maintenance teams
- Fast availability on Bussmann TSM series fuse links for urgent plant maintenance and shutdown requirements
Compatible Products & Accessories
- Eaton Bussmann BS88 B4 Fuse Base / Switch-Fuse Units (compatible with centre tag bolted fuse links)
- Eaton Bussmann BS88 Fuse Carriers and Disconnectors for B4 size
- Eaton Bussmann Lower-rated TSM series fuse links (for coordination — upstream/downstream)
- Eaton BS88 Fuse Link Indicator Flags / Striker Pins (check compatibility with TSM series)
- Eaton Low Voltage Switchgear and Distribution Boards accepting B4 BS88 fuse elements
- Eaton Motor Control Centre components and MCC panels
Frequently Asked Questions
What does the Class gG rating mean for the Eaton Bussmann ED400?
Class gG stands for general-purpose full-range fuse. It means the ED400 is designed to interrupt all overcurrents from the minimum fusing current (a small overload) up to the maximum prospective short-circuit current of 80 kA at 415 V AC. This distinguishes it from partial-range fuses such as Class aM, which only protect against short-circuits and rely on another device (e.g., overload relay) for overload protection. Class gG fuses are the standard choice for cable and distribution equipment protection in low voltage switchgear panels and distribution boards.
Is the ED400 suitable for 415 V three-phase systems used in Indian industries?
Yes. The ED400 is rated specifically at 415 V AC, which is the standard line voltage for three-phase LV distribution in India. There is no need to derate the fuse for this voltage. It is fully certified to IEC 60269-2 and BS88 Part 2, both of which are recognised by Indian electrical standards and inspectorates. It is appropriate for use in main distribution boards, feeder protection, and MCC incomers across industrial and commercial installations operating on India’s standard 415 V, 50 Hz supply.
What is the breaking capacity of the ED400 and why does it matter?
The ED400 has a breaking capacity of 80 kA. This is the maximum prospective fault current the fuse can safely interrupt without rupture, fire, or arc flash beyond safe limits. When selecting a fuse, the breaking capacity must equal or exceed the prospective short-circuit current available at the installation point, which is determined by the supply transformer impedance and cable impedance. In large industrial facilities with high-capacity transformers in Coimbatore and other Indian manufacturing hubs, prospective fault currents can be substantial — the 80 kA rating of the ED400 covers most practical LV distribution scenarios.
What is the difference between the ED400 bolted type and a cartridge or DIN-type fuse link?
A bolted-type BS88 fuse link like the ED400 uses bolted copper or brass tag connections — in this case, a centre tag single slot configuration — to secure the fuse into its base or carrier using fixing bolts. This provides a very low-resistance, mechanically robust connection suited to high current ratings such as 400 A. In contrast, cartridge fuses use a cylindrical body with end caps that clip or push into contacts, and DIN fuses follow a different European cylindrical standard. Bolted BS88 fuses at B4 size are a well-established format for high-current LV switchgear in India and the UK.
Can the ED400 be used for motor protection in motor control centres?
The ED400 is a Class gG general-purpose fuse and can provide short-circuit backup protection for motor circuits when used in combination with an overload relay or motor protection relay. However, for direct motor feeder protection where frequent starting inrush currents could cause nuisance blowing, a Class gM or Class aM fuse of the appropriate rating may be more suitable. Shansen Enterprises can advise on the correct fuse selection based on your motor kW rating, starting method (DOL, star-delta, VFD), and coordination requirements. Contact us via WhatsApp or email for a selection recommendation before ordering.
How do I order the Eaton Bussmann ED400 from Shansen Enterprises?
Ordering the ED400 from Shansen Enterprises is straightforward. You can send your enquiry via WhatsApp or email quoting the catalog number ED400 and your required quantity. Our team will confirm availability, provide a competitive price, and advise on delivery timeline to your location anywhere in India. For bulk orders from panel builders, switchgear OEMs, or EPC contractors, we can offer project pricing and phased delivery. Visit shansenenterprises.com or use the Contact / Request a Quote button on this page to reach us directly.
