Description
Overview
The Eaton Bussmann 170M1366 is part of the industry-trusted 170M Series of high speed square body semiconductor fuses, purpose-built to protect solid-state power devices such as SCRs, IGBTs, diodes, and thyristors from catastrophic overcurrent damage. Rated at 80 A and 690 V AC with a Class aR characteristic per IEC 60269-4, this fuse provides the sub-cycle clearing speed that semiconductor devices demand. Its 200 kA breaking capacity ensures reliable operation even under severe short-circuit conditions in industrial power conversion equipment.
Key Features
- 80 A Current Rating — precisely matched to semiconductor device ratings in drive and converter assemblies
- 690 V AC Voltage Rating — suits standard European and Indian 415 V to 690 V industrial power systems
- 200 kA Interrupt Rating — exceptional breaking capacity for protection in high fault-level industrial installations
- Class aR Current Limiting Action — ultra-fast response limits let-through current and I²t to protect semiconductor junctions
- 000/80 Square Body Format with Bolt-In Connections — robust, compact construction simplifies panel integration and ensures reliable electrical contact
- IEC 60269-4 Compliant — internationally recognised standard for semiconductor fuse performance and testing
- CE Marked and RoHS Compliant — meets European safety and environmental directives for global project specifications
- IEC Rated and UL/CSA Listed — dual certification supports both international and North American equipment standards
- No Fuse Indicator — clean design for installations where external monitoring or blown-fuse signalling is handled by the control system
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M1366 |
| Series | Bussmann 170M |
| Amperage Rating | 80 A |
| Voltage Rating (AC) | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Construction | Square body 000/80 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 170M1366 is the preferred choice for engineers designing protection schemes for variable frequency drives (VFDs), soft starters, DC common bus systems, rectifier bridges, and thyristor power controllers. The Class aR rating confirms that this fuse is optimised exclusively for semiconductor protection — it clears faults in microseconds, well within the thermal withstand limit of IGBTs and SCRs, preventing device destruction and unplanned downtime. At 80 A and 690 V, it fits the input or output stage of medium-power drive modules and converter units commonly found in manufacturing and process plants.
In Indian industrial facilities — including textile mills, cement plants, steel rolling mills, and automotive manufacturing lines across Tamil Nadu, Maharashtra, Gujarat, and Andhra Pradesh — VFDs and power converters operate in demanding environments with frequent load transients. The 200 kA breaking capacity of this fuse provides confidence that even in high-fault-current switchgear panels, protection will be decisive and component damage contained. Panel builders and OEMs specifying equipment for export will also appreciate the dual IEC and UL/CSA certification.
When selecting a replacement or upgrade, verify the existing fuse’s current rating, voltage class, body size (000/80 square body), and Class aR designation. Do not substitute a general-purpose gG or gM fuse — semiconductor fuses have fundamentally lower I²t and must be matched to the protected device’s published I²t rating. Contact Shansen Enterprises for application guidance if you are unsure of the correct selection.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner based in Coimbatore, Tamil Nadu
- 100% genuine Eaton Bussmann products supplied with full manufacturer warranty
- Pan-India delivery to all major industrial cities and towns
- WhatsApp technical support for product selection and application queries
- Bulk pricing and blanket order options for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and fuse bases compatible with 000/80 square body format
- Eaton Bussmann 170M Series companion fuses at adjacent current ratings (63 A, 100 A) for complete drive protection coordination
- Eaton DIN rail and panel-mount semiconductor fuse blocks for industrial cabinet assembly
- Eaton motor protection circuit breakers and contactors for upstream coordination
- Fuse monitoring and blown-fuse indication accessories for 170M Series installations
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M1366?
Class aR designates a fuse designed exclusively for the protection of semiconductor devices. Unlike general-purpose Class gG fuses, a Class aR fuse is engineered to clear fault currents within microseconds — fast enough to protect the silicon junctions inside IGBTs, SCRs, thyristors, and diodes before they are damaged. The 170M1366 must not be replaced with a gG or gM fuse, as those types are far too slow to protect semiconductors effectively.
What is the interrupt rating of the 170M1366 and why does it matter?
The 170M1366 carries a 200 kA interrupt rating, meaning it can safely break fault currents up to 200 kA without rupturing or causing arc flashover. This is especially important in high-power industrial installations where upstream transformer and bus impedance is low and prospective short-circuit currents are high. Using a fuse with an insufficient interrupt rating in such environments creates a serious safety hazard.
Can the 170M1366 be used for DC bus protection in VFD panels?
Yes. The Eaton Bussmann 170M Series is widely applied in DC common bus and DC drive applications. For DC applications, always confirm the DC voltage rating from the Eaton datasheet or contact Shansen Enterprises — DC voltage ratings for semiconductor fuses differ from AC ratings and must be verified against your specific circuit voltage before installation.
Is the Eaton Bussmann 170M1366 available for immediate supply in India?
Shansen Enterprises maintains stock of key Eaton Bussmann 170M Series fuses at our Coimbatore facility and can source specific catalog numbers through Eaton’s authorized supply chain for delivery across India. Lead times vary by quantity and market availability. Contact us via WhatsApp or email with your requirement and we will confirm availability and dispatch timeline promptly.
What body size and connection type does the 170M1366 use?
The 170M1366 uses a 000/80 square body format with bolt-in connections. This is a standard mechanical format within the 170M Series, and compatible fuse holders and bus bar mounting hardware are available from Eaton. Always confirm mechanical compatibility with your existing fuse base before ordering a replacement.
How do I order the Eaton Bussmann 170M1366 from Shansen Enterprises?
You can request a quote directly from Shansen Enterprises by clicking the WhatsApp or email quote button on this page. Please mention catalog number 170M1366, the quantity required, and your delivery location in India. Our team in Coimbatore will respond with pricing, availability, and estimated delivery. For bulk or project requirements, we offer competitive pricing and can coordinate with Eaton for direct supply.
