Description
Overview
The Eaton Bussmann 170M5766 is a high speed square body semiconductor fuse rated at 1000 A and 690 V AC, engineered specifically for the protection of sensitive power semiconductor devices such as thyristors, diodes, IGBTs, and SCRs. Part of the globally recognised Bussmann 170M Series, this fuse operates under IEC 60269-4 as a Class aR device, providing ultra-fast current limiting action that preserves semiconductor integrity under short-circuit and overcurrent conditions. Its robust 2FKE/115 square body construction with bolt-in terminations makes it a dependable choice for high-power industrial drives and converter panels assembled across India.
Key Features
- 1000 A Current Rating — handles high continuous load currents typical of large DC drives and rectifier stacks
- 690 V AC Rated Voltage — compatible with standard 400 V and 690 V industrial power systems widely used in India
- 200 kA Breaking Capacity — ultra-high interrupt rating ensures safe clearance of severe fault currents without collateral damage
- Class aR Semiconductor Protection — purpose-built for semiconductor device protection with fast I²t characteristics
- 2FKE/115 Square Body Format — industry-standard square body with bolt-in connections for straightforward panel integration and replacement
- IEC 60269-4 Compliant — meets international standards for high speed fuses used in semiconductor equipment
- CE Marked and RoHS Compliant — suitable for export panels and environmentally regulated installations
- IEC Rated and UL/CSA Listed — dual certification supports both domestic Indian and export panel builder requirements
- No Fuse Indicator — compact design without auxiliary blow indicator, ideal where space is at a premium
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M5766 |
| Series | Bussmann 170M |
| Amperage Rating | 1000 A |
| Rated Voltage AC | 690 V |
| Breaking Capacity | 200 kA |
| Interrupt Rating | 200 kA |
| Fuse Class | Class aR |
| Construction | Square body 2FKE/115 format with bolt-in connections |
| Fuse Indicator | None |
| Standard | IEC 60269-4 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL/CSA Listed |
| Application | Semiconductor protection, DC common bus, DC drives, power converters, rectifiers, VFDs, soft starters, thyristor stacks |
Applications & Selection Guide
The Eaton Bussmann 170M5766 is the preferred choice for engineers designing protection schemes around high-power semiconductor assemblies. At 1000 A and 690 V AC, it covers the upper end of drive and converter ratings commonly found in steel plants, paper mills, water treatment facilities, and large HVAC installations across India. Its Class aR rating means it is specifically calibrated for semiconductor back-up protection — it will not operate on motor starting surges or transformer inrush, but will clear damaging short-circuit currents before semiconductor junctions are destroyed.
This fuse is widely selected for DC common bus drive systems, 6-pulse and 12-pulse rectifier bridges, soft starter input and output circuits, thyristor power controllers, and high-current VFD front-end protection. The 2FKE/115 bolt-in square body format ensures mechanical compatibility with most major busbar and fuse holder systems used by Indian panel builders and OEMs.
When selecting this fuse, verify that the I²t let-through value is lower than the I²t withstand rating of the semiconductor device being protected. Consult the Eaton Bussmann 170M Series coordination curves or contact Shansen Enterprises in Coimbatore for application-specific selection support covering projects anywhere in India.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner Coimbatore — guaranteed genuine Eaton Bussmann products with full traceability
- 100% genuine products supplied with manufacturer warranty and documentation
- Pan-India delivery to all major cities and industrial zones including Chennai, Mumbai, Pune, Bengaluru, Hyderabad, and beyond
- WhatsApp technical support for application selection, cross-referencing, and sizing queries
- Bulk pricing and project-rate contracts available for panel builders, EPC contractors, and OEMs
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and fuse bases compatible with 2FKE/115 square body format
- Eaton Bussmann 170M Series fuses in adjacent current ratings (800 A, 900 A, 1250 A) for system coordination
- Eaton Bussmann auxiliary fuse blow indicators and remote indication accessories
- Eaton DIN rail and busbar mounting systems for square body high speed fuses
- Eaton Bussmann semiconductor fuse selection software and I²t coordination charts
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M5766?
Class aR (current limiting, partial range) designates a fuse specifically designed to protect semiconductor devices. Unlike general-purpose gG fuses, a Class aR fuse operates only in the short-circuit current range where semiconductor junctions would otherwise be destroyed. It is not intended to provide overload protection on its own, so it is typically co-ordinated with a separate overcurrent protective device for full system protection.
Is the 170M5766 suitable for protecting VFDs and soft starters in Indian industrial installations?
Yes. The 170M5766 is rated at 1000 A, 690 V AC with a 200 kA breaking capacity, making it well suited for protecting the semiconductor input stages of large VFDs, soft starters, and DC drives used in Indian industries such as steel, cement, textiles, and water treatment. Always confirm I²t co-ordination with the semiconductor manufacturer’s data sheet before finalising the selection.
What is the 2FKE/115 format and which fuse holders is it compatible with?
The 2FKE/115 designation refers to a standardised square body fuse format with specific external dimensions and bolt-in terminal connections. This format is compatible with a range of Eaton Bussmann and third-party fuse holders and busbars designed for the 2FKE/115 square body size. Contact Shansen Enterprises to confirm holder compatibility for your specific panel layout or to source matched Eaton accessories.
Does the Eaton Bussmann 170M5766 carry UL and CSA certification as well as IEC?
Yes. The 170M5766 is IEC Rated and UL/CSA Listed, meaning it meets both international IEC 60269-4 requirements and North American UL/CSA standards. This dual certification is valuable for Indian panel builders and OEMs who export equipment to North American or European markets, as the same fuse satisfies multiple regulatory requirements.
What is the breaking capacity of the 170M5766 and why does it matter?
The 170M5766 has a breaking capacity of 200 kA, which is the maximum prospective fault current it can safely interrupt without rupture or arc flash. In high-power industrial installations, particularly those close to large transformers or with low impedance supply networks, prospective fault levels can be very high. A 200 kA rated fuse ensures the protective device itself does not become a hazard under worst-case fault conditions.
How do I order the Eaton Bussmann 170M5766 from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M5766 directly from Shansen Enterprises by clicking the WhatsApp button on this page or by sending an email to our sales team. Please mention the catalog number 170M5766, the quantity required, and your delivery location anywhere in India. As an authorized Eaton channel partner based in Coimbatore, we can provide competitive pricing, lead time confirmation, and technical support for your application.
