Description
Overview
The Eaton Bussmann 170M6812D is a 800 A, 690 V AC high speed square body semiconductor fuse from the renowned 170M Series, engineered to deliver ultra-fast overcurrent protection for sensitive power semiconductor devices. Constructed to DIN 43620 DIN 3 format with knife blade contacts, it offers a 200 kA breaking capacity under IEC 60269-4, making it a reliable choice for demanding industrial power electronics applications. The dual indicator (Type D) provides immediate visual confirmation of a blown fuse, reducing downtime in panel installations across manufacturing plants and process industries.
Key Features
- 800 A Current Rating — suits high-power semiconductor drive and converter circuits requiring robust overcurrent protection
- 690 V AC Rated Voltage — compatible with standard industrial three-phase distribution networks in India
- 200 kA Interrupt Rating — high breaking capacity ensures safe fault clearance even under severe short-circuit conditions
- Class aR Fuse — optimised for semiconductor protection, providing fast-acting response to protect thyristors, diodes, and IGBTs
- DIN 43620 DIN 3 Format with Knife Blade Contacts — industry-standard square body construction for easy integration into existing fuse holders and busbars
- Dual Fuse Indicator (Type D) — two-sided visual indicator allows fault detection from multiple angles in panel installations
- IEC 60269-4 Rated — internationally recognised standard for semiconductor fuse performance and safety
- CE Marked and RoHS Compliant — meets European conformity and restriction of hazardous substances requirements
- Bussmann 170M Series Reliability — backed by decades of Eaton Bussmann engineering for consistent, repeatable performance
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M6812D |
| Series | Bussmann 170M |
| Amperage Rating | 800 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Fuse Type | High Speed Square Body |
| Construction | DIN 43620 DIN 3 format with knife blade contacts |
| Fuse Indicator | Dual Indicator (Type D) |
| Standard | IEC 60269-4 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated |
| Application | Semiconductor protection, DC common bus, DC drives, power converters, rectifiers, VFDs, soft starters, thyristor stacks |
Applications & Selection Guide
The 170M6812D is purpose-built for protecting power semiconductor devices in high-current industrial applications. Its Class aR rating means it is specifically designed to clear faults faster than a standard gG or gR fuse, protecting expensive thyristors, diodes, SCRs, and IGBTs from catastrophic failure caused by short-circuit currents. Typical applications include DC common bus architectures, variable frequency drives (VFDs), AC and DC motor soft starters, rectifier assemblies, and multi-drive power converter panels used across Indian industries such as steel, cement, paper, textiles, water treatment, and heavy engineering.
When selecting a semiconductor fuse for your drive or converter panel, it is essential to match the fuse’s I²t let-through value to the semiconductor’s rated I²t withstand. The 170M6812D at 800 A and 690 V is suited for high-power drive cabinets and inverter stacks operating on standard 415 V or 690 V industrial supplies. Always verify compatibility with the semiconductor manufacturer’s datasheet and coordinate with your panel builder or drive OEM before finalising selection.
Across India, panel builders, OEMs, and EPC contractors in Coimbatore, Chennai, Pune, Ahmedabad, and Hyderabad rely on the Eaton Bussmann 170M Series for its proven field performance, global certifications, and ready availability through authorised distributors such as Shansen Enterprises.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — direct supply chain, genuine products
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty
- Pan-India delivery to all major industrial cities and tier-2 locations
- WhatsApp technical support for application, selection, and sizing queries
- Bulk pricing and project-rate contracts available for panel builders and OEMs
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and mounting bases (DIN 43620 DIN 3 compatible)
- Eaton Bussmann 170M Series knife blade contact fuse carriers
- Eaton Bussmann semiconductor fuse indicators and remote signal accessories
- Eaton Bussmann 170M Series companion fuses for other current ratings (e.g., 400 A, 630 A, 1000 A)
- Eaton DIN rail and busbar mounting systems for square body fuse assemblies
- Surge protection devices and DC bus protection components for drive panel assemblies
Frequently Asked Questions
What does Class aR mean for the 170M6812D fuse?
Class aR designates a semiconductor protection fuse with a fast-acting characteristic specifically designed to protect power semiconductor devices such as thyristors, diodes, SCRs, and IGBTs. Unlike general-purpose Class gG fuses, a Class aR fuse clears faults within microseconds to prevent the semiconductor’s junction temperature from exceeding its rated withstand level. The 170M6812D must always be used in conjunction with a backup overcurrent protective device for full system protection, as Class aR fuses only operate under high-level overcurrent conditions.
Is the 170M6812D suitable for use in VFD and soft starter panels in India?
Yes. The Eaton Bussmann 170M6812D is specifically designed for semiconductor protection in VFD (variable frequency drive), soft starter, DC drive, and power converter panels. At 800 A and 690 V AC with a 200 kA interrupt rating, it is well suited for high-power drive cabinets operating on standard Indian industrial supplies of 415 V (line-to-line) or 690 V systems. Always confirm that the fuse I²t value is compatible with the semiconductor devices used in your specific drive or converter model.
What is the significance of the Dual Indicator (Type D) on the 170M6812D?
The dual fuse indicator (Type D) provides a visual signal on both sides of the fuse body when the fuse has operated. This allows maintenance technicians to identify a blown fuse quickly from multiple viewing angles inside a panel enclosure, reducing fault diagnosis time and minimising production downtime. Some indicator variants can also be wired to remote signal circuits for alarm or panel monitoring systems — consult the datasheet or contact Shansen Enterprises for accessory compatibility details.
What fuse holder or mounting base is compatible with the 170M6812D?
The 170M6812D is built to DIN 43620 DIN 3 format with knife blade contacts, which is the internationally standardised square body form factor. It is compatible with Eaton Bussmann DIN 3 fuse holders, mounting bases, and carriers specifically designed for the 170M Series. When specifying the mounting hardware, confirm the DIN size and current rating of the holder matches the 800 A rating of the fuse. Shansen Enterprises can assist in identifying and supplying the correct fuse holder and accessories for your panel design.
Does the 170M6812D carry CE and RoHS compliance for export projects?
Yes. The Eaton Bussmann 170M6812D is CE Marked, confirming conformity with applicable European Union directives, and is RoHS compliant, meaning it meets the Restriction of Hazardous Substances requirements. It is also IEC Rated to IEC 60269-4. These certifications make it suitable for use in projects requiring international compliance documentation, including export-oriented manufacturing facilities and projects with European end-client specifications.
How do I order the Eaton Bussmann 170M6812D from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M6812D directly from Shansen Enterprises by clicking the WhatsApp button on this page or sending an email inquiry with your required quantity and delivery location. Our team will respond with pricing, availability, and lead time. Shansen Enterprises is an authorised Eaton channel partner based in Coimbatore and delivers genuine Eaton Bussmann products to customers across India including Chennai, Bangalore, Pune, Mumbai, Hyderabad, and all tier-2 industrial locations.
