Description
Overview
The Eaton Bussmann 170M5448 is part of the renowned 170M Series of high speed square body semiconductor fuses, engineered to provide precise overcurrent and short-circuit protection for sensitive power semiconductor components. Rated at 800 A and 1000 V AC with a 200 kA breaking capacity, this fuse conforms to IEC 60269-4 and carries CE marking and RoHS compliance, making it suitable for use in demanding industrial power electronics applications across India and globally. Its 2BKN/80 square body format with bolt-in connections ensures robust mechanical installation in panel-built drives and converter assemblies.
Key Features
- 800 A Current Rating — handles high continuous load currents in power converter and drive applications
- 1000 V AC Voltage Rating — suitable for medium and high voltage semiconductor protection circuits
- 200 kA Breaking Capacity — provides reliable fault clearing under the most severe short-circuit conditions
- Class aR Rating — fast-acting semiconductor protection class ensuring thyristors, diodes, and IGBTs are protected before thermal damage occurs
- IEC 60269-4 Compliant — internationally recognized standard for high speed fuses used in semiconductor protection
- 2BKN/80 Square Body Format — industry-standard form factor ensuring compatibility with standard fuse holders and busbars
- Bolt-in Connections — secure, low-resistance terminations for reliable electrical contact in high-current installations
- CE Marked and RoHS Compliant — meets European regulatory requirements for export and domestic projects
- No Fuse Indicator — compact design without striker or visual indicator, ideal where space is at a premium
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M5448 |
| Series | Bussmann 170M |
| Amperage Rating | 800 A |
| Voltage Rating AC | 1000 V |
| Fuse Class | Class aR |
| Breaking Capacity | 200 kA |
| Interrupt Rating | 200 kA |
| Construction | Square body 2BKN/80 format with bolt-in connections |
| Fuse Indicator | None |
| 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 Eaton Bussmann 170M5448 is the right choice when you need fast-acting, high-capacity protection for power semiconductor devices in industrial drives and power conversion equipment. Its Class aR rating means it is specifically designed to clear faults in the sub-cycle timeframe required to protect thyristors, diodes, SCRs, and IGBTs from destructive I²t energy during short-circuit events. Typical applications include DC common bus architectures, multi-drive panels, rectifier bridges, VFD input and output protection, soft starter bypass circuits, and thyristor stacks in industrial heating and process control systems.
When selecting a semiconductor fuse, engineers must ensure the fuse’s I²t let-through value is lower than the withstand rating of the semiconductor device being protected. The 170M5448’s 200 kA breaking capacity makes it suitable for installations connected to high-fault-level supply systems, including those fed directly from large transformers or grid-connected inverters. Always verify that the fuse’s current rating, voltage rating, and I²t characteristic match the semiconductor datasheet requirements before installation.
In India, the 170M Series is widely used by panel builders, OEMs, and EPC contractors across Coimbatore, Chennai, Pune, Ahmedabad, and Mumbai in industries including textile machinery, steel processing, automotive manufacturing, renewable energy, and water treatment. Shansen Enterprises supplies the complete Eaton Bussmann 170M range from Coimbatore with fast pan-India dispatch.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products, factory warranty
- 100% genuine Eaton Bussmann fuses with full manufacturer warranty
- Pan-India delivery to Chennai, Bangalore, Mumbai, Pune, Hyderabad, Delhi, and beyond
- WhatsApp technical support for fuse selection, I²t matching, and panel design queries
- Bulk pricing and credit terms available for panel builders, OEMs, and system integrators
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and fuse bases for 2BKN/80 square body format
- Eaton Bussmann 170M Series companion fuses in alternative amperage ratings (e.g., 630 A, 1000 A, 1250 A)
- Eaton Bussmann fuse monitoring and blown fuse indication modules
- Copper busbars and bolt-in terminal accessories for 170M Series mountings
- Eaton DX range semiconductor contactors for coordinated drive protection
- Surge protection devices (SPDs) for VFD and converter panel assemblies
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M5448?
Class aR (current limiting, semiconductor protection range) indicates that this fuse is designed exclusively for the protection of power semiconductor devices such as thyristors, diodes, SCRs, and IGBTs. Unlike general-purpose fuses, Class aR fuses operate in the sub-cycle range to limit the let-through energy (I²t) to a value low enough to prevent semiconductor junction damage. The 170M5448 does not provide overload protection by itself and is typically used in coordination with circuit breakers or contactors that handle overload conditions.
What is the difference between the Eaton Bussmann 170M5448 and a standard BS88 fuse?
The 170M5448 is a Class aR high speed semiconductor fuse rated to IEC 60269-4, whereas BS88 fuses are Class gG or gM general-purpose low voltage fuses rated to IEC 60269-2. The key difference lies in operating speed and I²t characteristics: the 170M5448 clears faults in microseconds to protect semiconductor devices, while BS88 fuses are designed for cable and equipment protection at slower operating times. Using a standard BS88 fuse in a semiconductor protection application will not protect the device adequately.
Can the Eaton Bussmann 170M5448 be used for DC applications?
The raw specification provided for the 170M5448 lists a rated voltage of 1000 V AC. Eaton Bussmann 170M Series fuses are commonly applied in DC common bus and DC drive applications; however, you must refer to the official Eaton datasheet and confirm the rated DC voltage for catalog number 170M5448 before use in a DC circuit. Please contact Shansen Enterprises or Eaton technical support for clarification specific to your application voltage and circuit configuration.
Is the Eaton Bussmann 170M5448 RoHS compliant and CE marked?
Yes. The Eaton Bussmann 170M5448 is both CE Marked and RoHS Compliant, making it suitable for export projects, European-standard panel builds, and projects in India where RoHS compliance is specified by the end customer. These compliance marks confirm that the product meets relevant European safety and environmental directives and that restricted hazardous substances are not used in its construction.
What fuse holder or base is compatible with the Eaton Bussmann 170M5448?
The 170M5448 uses the standard 2BKN/80 square body format with bolt-in connections. Compatible fuse holders and mounting bases are available from the Eaton Bussmann 170M Series accessory range. When selecting a holder, confirm that the current rating, voltage rating, and mechanical dimensions of the holder match those of the 170M5448. Shansen Enterprises can advise on compatible holders and accessories — contact us via WhatsApp or email with your panel layout requirements.
How do I order the Eaton Bussmann 170M5448 from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M5448 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 170M5448, the quantity required, and your delivery location anywhere in India. We will respond promptly with pricing, availability, and estimated delivery timelines. Bulk orders and repeat purchase arrangements are also welcome — ask about our OEM and panel builder pricing.
