Description
Overview
The Eaton Bussmann 170M4009 is a high speed square body semiconductor fuse rated 250 A at 690 V AC, engineered to deliver sub-cycle fault interruption for sensitive power electronics. Part of the globally trusted Bussmann 170M Series, this Class aR fuse meets IEC 60269-4 and carries IEC, UL/CSA, CE, and RoHS credentials — making it a compliant, reliable choice for industrial semiconductor protection in India and worldwide. Its compact 1/80 square body format with bolt-in connections simplifies panel integration in power conversion and drive systems.
Key Features
- 250 A Amperage Rating — suitable for medium-power semiconductor circuits without over-sizing protection devices
- 690 V AC Rated Voltage — covers standard industrial three-phase supply voltages common across Indian factories and OEM panels
- 200 kA Breaking Capacity — high interrupt rating ensures safe fault clearing even on low-impedance bus systems
- Class aR Fast-Acting Response — ultra-rapid clearing characteristic specifically optimized for semiconductor device protection, not for general cable or motor protection
- IEC 60269-4 Compliant — internationally recognized standard for high speed fuses used in semiconductor equipment
- Square Body 1/80 Format with Bolt-In Connections — provides consistent clamping force, low contact resistance, and straightforward replacement in existing fuse holders
- IEC Rated, UL/CSA Listed — dual certification simplifies compliance for export-grade panels and multinational machine builders
- CE Marked and RoHS Compliant — meets European environmental and safety directives, supporting green manufacturing initiatives
- No Fuse Indicator — clean, compact form factor without auxiliary indicator; status monitoring handled at system level
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M4009 |
| Series | Bussmann 170M |
| Amperage Rating | 250 A |
| Rated Voltage AC | 690 V |
| Fuse Class | Class aR |
| Breaking Capacity | 200 kA |
| Interrupt Rating | 200 kA |
| Construction | Square body 1/80 format, bolt-in connections |
| Fuse Indicator | None |
| Standard | IEC 60269-4 |
| Certifications | IEC Rated, UL/CSA Listed |
| Compliances | CE Marked, RoHS Compliant |
| Application | Semiconductor protection, DC common bus, DC drives, power converters, rectifiers, VFDs, soft starters, thyristor stacks |
Applications & Selection Guide
The 170M4009 is purpose-built for semiconductor protection in power electronics panels. Its Class aR characteristic means it is designed exclusively to protect thyristors, diodes, IGBTs, and SCRs — it should not be used as a general-purpose or motor branch circuit fuse. Applications include DC common bus architectures, variable frequency drives (VFDs), soft starters, AC-DC rectifiers, and thyristor power controllers where a fault must be interrupted before semiconductor junctions are destroyed.
When selecting this fuse, verify the I²t let-through value against the semiconductor manufacturer’s withstand rating. The 250 A rating suits medium-power converter stages operating on 415 V or 690 V industrial supply. The 200 kA interrupt rating covers virtually all industrial bus fault levels encountered in Indian plants, substations, and OEM switchgear assemblies in sectors such as steel, cement, textile machinery, water treatment, and renewable energy inverter systems.
In India, panel builders and OEMs in Coimbatore, Pune, Chennai, Ahmedabad, and Hyderabad routinely specify Bussmann 170M Series fuses for drive panels and converter cabinets. Shansen Enterprises maintains stock of the 170M Series in Coimbatore and supports pan-India project requirements with quick dispatch and technical guidance.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products with full manufacturer traceability
- 100% genuine Eaton Bussmann fuses supplied with warranty and documentation
- Pan-India delivery to all major industrial cities and project sites
- WhatsApp technical support for fuse selection, I²t coordination, and holder compatibility
- Bulk pricing available for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and fuse blocks compatible with 1/80 square body format
- Eaton Bussmann 170M Series companion fuses in adjacent current ratings (e.g., 200 A, 315 A) for drive panel BOM standardization
- Eaton Bussmann striker-type indicator accessories for remote blown-fuse signaling
- DIN rail and chassis-mount fuse holder assemblies for 690 V semiconductor fuse applications
- Eaton semiconductor protection fuses for other voltage classes (500 V, 1000 V) in the 170M Series
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M4009?
Class aR denotes a fast-acting fuse range specifically designed for semiconductor protection. Unlike Class gG general-purpose fuses, a Class aR fuse does not provide overload protection — it is rated only to interrupt short-circuit currents and must be used in combination with other protective devices (such as circuit breakers or contactors) that handle sustained overloads. The 170M4009’s aR characteristic ensures it clears faults fast enough to protect thyristors, diodes, and IGBTs before their junctions are thermally destroyed.
Can the 170M4009 be used on a 415 V three-phase system in India?
Yes. The 170M4009 is rated at 690 V AC, which means it is fully suitable for use on India’s standard 415 V (line-to-line) industrial supply systems. Operating a 690 V-rated fuse at 415 V provides additional voltage derating margin, which is considered good engineering practice. Always confirm that the fuse holder or fuse block is also rated for the system voltage and current.
What is the breaking capacity of the 170M4009 and why does it matter?
The 170M4009 has a breaking capacity of 200 kA. This is the maximum prospective fault current the fuse can safely interrupt without rupturing or causing an arc flash hazard. A 200 kA rating covers the overwhelming majority of industrial fault levels in India, including installations close to large transformers or low-impedance bus bars. Always ensure the fuse’s interrupt rating equals or exceeds the available short-circuit current at the point of installation, as verified by a fault level study.
Does the 170M4009 include a fuse indicator or striker pin?
No. The catalog 170M4009 is supplied without a fuse indicator or striker pin. If blown-fuse indication is required for your panel design — for example, to trigger an interlock or visual alarm — consider selecting an alternative 170M Series variant that includes a striker-type indicator, or integrate external current monitoring at the system level. Shansen Enterprises can advise on the correct indicator-equipped variant if needed.
What fuse holder is compatible with the Eaton Bussmann 170M4009?
The 170M4009 uses a square body 1/80 format with bolt-in connections. It requires a fuse holder or fuse block rated for the 1/80 body size, 250 A, and 690 V AC. Eaton Bussmann offers a range of compatible fuse blocks and bus bars within the 170M accessory family. Contact Shansen Enterprises to cross-reference the correct holder part number for your panel layout and to confirm mechanical and electrical compatibility.
How do I order the Eaton Bussmann 170M4009 from Shansen Enterprises?
You can request a quote directly from Shansen Enterprises via WhatsApp or email using the contact buttons on this page. Please share the catalog number (170M4009), required quantity, and your delivery location anywhere in India. Our team will respond promptly with pricing, availability, and estimated delivery time. Shansen Enterprises is an authorized Eaton channel partner in Coimbatore, ensuring you receive 100% genuine Eaton Bussmann products with full documentation and warranty support.
