Description
Overview
The Eaton Bussmann 170M2620 is a high speed square body semiconductor protection fuse rated 350 A at 690 V AC, carrying the Class aR designation under IEC 60269-4 for fast-acting semiconductor circuit protection. Part of the trusted Bussmann 170M Series, this fuse offers a 200 kA breaking capacity in a compact 00/80 bolt-in square body format. It is CE Marked, RoHS compliant, IEC rated, and UL Recognized, making it suitable for panel builders and OEMs deploying equipment across India and export markets.
Key Features
- 350 A Current Rating — handles high continuous current loads in power conversion equipment
- 690 V AC Rated Voltage — compatible with standard industrial three-phase supply in India and globally
- 200 kA Breaking Capacity — provides reliable fault interruption under worst-case short-circuit conditions
- Class aR Rating — optimised for semiconductor protection with fast clearing of overcurrents that could damage diodes, thyristors, and IGBTs
- Square Body 00/80 Format with Bolt-In Connections — fits standard semiconductor fuse holders for straightforward replacement and installation
- IEC 60269-4 Compliant — internationally recognised standard ensuring consistent performance and interchangeability
- CE Marked and RoHS Compliant — meets European regulatory requirements and restricts hazardous substances
- UL Recognized — additional certification for equipment destined for North American markets or UL-listed panels
- No Fuse Indicator — straightforward, cost-effective design for applications where visual indication is handled externally
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M2620 |
| Series | Bussmann 170M |
| Amperage Rating | 350 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Construction | Square body 00/80 format with bolt-in connections |
| Fuse Indicator | None |
| Standard | IEC 60269-4 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL Recognized |
| Application | Semiconductor protection, DC common bus, DC drives, power converters, rectifiers, VFDs, soft starters, thyristor stacks |
Applications & Selection Guide
The Eaton Bussmann 170M2620 is the correct choice when protecting high-power semiconductor devices — including SCRs, diodes, IGBTs, and thyristor assemblies — in industrial drive systems, DC common bus architectures, and large power conversion equipment. Its Class aR characteristic delivers a clearing speed fast enough to protect the semiconductor junction before thermal damage occurs, something that general-purpose gG or gR fuses cannot guarantee at this current level.
At 350 A and 690 V AC with a 200 kA interrupt rating, this fuse is particularly well suited to high-power VFD panels, soft starter assemblies, rectifier bridges, and industrial DC drives widely used across India in sectors such as cement, steel, textile manufacturing, water treatment, oil & gas, and automotive production. The 00/80 bolt-in square body format is a recognised standard in semiconductor fuse holders from Eaton and compatible manufacturers, simplifying panel design in Coimbatore and across India.
When selecting semiconductor fuses, ensure the fuse I²t let-through value is matched to the semiconductor device’s rated I²t withstand value as specified by the device manufacturer. The 170M Series offers a range of current ratings and body sizes — consult Shansen Enterprises for guidance on selecting the correct 170M variant for your specific drive or converter design.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products with full manufacturer backing
- 100% genuine Eaton Bussmann products with warranty
- Pan-India delivery — fast dispatch from Coimbatore to all major industrial cities
- WhatsApp technical support for fuse selection, sizing, and application queries
- Bulk pricing for panel builders, system integrators, and OEMs
Compatible Products & Accessories
- Eaton Bussmann 170M Series semiconductor fuse holders (00/80 square body type)
- Eaton Bussmann 170M Series fuses in adjacent current ratings (e.g. 170M2615, 170M2625) for system design flexibility
- Eaton semiconductor fuse blocks and DIN rail mounting accessories
- Eaton busbar and connection hardware for bolt-in fuse terminations
- Eaton Bussmann fuse monitoring and indication modules for panel-level fault signalling
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M2620?
Class aR is a fuse characteristic defined under IEC 60269-4 specifically for semiconductor protection. Unlike general-purpose fuses, an aR fuse is designed to clear high overcurrents extremely rapidly — fast enough to prevent the thermal energy (I²t) from reaching the damage threshold of semiconductor devices such as thyristors, diodes, and IGBTs. The 170M2620 with Class aR rating is therefore the correct protection device for power semiconductor circuits, not a standard gG or gR fuse.
Can the Eaton Bussmann 170M2620 be used on a 415 V Indian industrial supply?
Yes. The 170M2620 is rated at 690 V AC, which means it is fully suitable for use on the standard 415 V (line-to-line) three-phase industrial supply used across India. Operating a 690 V rated fuse at 415 V provides additional voltage margin and is entirely within the fuse’s design parameters.
What fuse holder is compatible with the Eaton Bussmann 170M2620?
The 170M2620 uses a square body 00/80 format with bolt-in connections. Compatible fuse holders are those designed for the 00/80 square body semiconductor fuse format, including Eaton Bussmann’s own range of semiconductor fuse holders. Contact Shansen Enterprises in Coimbatore to confirm the correct holder for your panel design and current rating.
Does the Eaton Bussmann 170M2620 include a fuse indicator?
No, the 170M2620 does not include a built-in fuse indicator. If visual or remote blown-fuse indication is required for your panel or system, you can use an external fuse monitoring module compatible with the 170M Series fuse holder. Shansen Enterprises can advise on suitable Eaton Bussmann indication accessories.
Is the 170M2620 UL Recognized — what does that mean for my application?
UL Recognized means the 170M2620 has been evaluated by Underwriters Laboratories as a component for use within UL-listed end products or assemblies. This is important for OEMs manufacturing equipment for export to North America or for projects requiring UL-compliant panels. It is in addition to the primary IEC 60269-4 rating that governs its use in Indian and European markets.
How do I order the Eaton Bussmann 170M2620 from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M2620 directly through Shansen Enterprises by using the WhatsApp button or email contact form on this page. Please mention the catalog number 170M2620, required quantity, and delivery location anywhere in India. Our team in Coimbatore will respond promptly with pricing, availability, and estimated delivery time. Bulk orders and repeat supply contracts for panel builders are welcome.
