Description
Overview
The Eaton Bussmann 170M5412 is a high speed square body semiconductor fuse rated at 630 A and 690 V AC, engineered specifically to protect power semiconductors such as thyristors, diodes, and IGBTs in high-power industrial drive and converter applications. Part of the globally trusted Bussmann 170M Series, this fuse conforms to IEC 60269-4 and provides an interrupt rating of 200 kA, ensuring robust fault protection even under severe short-circuit conditions. With CE marking and RoHS compliance, it meets the requirements of modern industrial installations across India and international markets.
Key Features
- 630 A Current Rating — Handles high continuous load currents typical in large drive and converter systems.
- 690 V AC Voltage Rating — Suitable for standard industrial 690 V AC distribution networks widely used in Indian manufacturing plants.
- 200 kA Interrupt Rating — High breaking capacity ensures safe and reliable fault clearance under worst-case short-circuit conditions.
- Class aR Semiconductor Protection — Purpose-built for semiconductor fusing; clears faults faster than general-purpose fuses to prevent semiconductor damage.
- Square Body 2BN/50 Format with Bolt-In Connections — Compact, standardized form factor simplifies panel design and replacement in existing installations.
- IEC 60269-4 Compliant — Meets international standards for high speed fuses used in semiconductor protection applications.
- CE Marked and RoHS Compliant — Meets European safety and environmental directives; suitable for export-oriented and compliance-driven projects.
- IEC Rated and UL/CSA Listed — Multi-certification supports use across global and Indian industrial projects with varied approval requirements.
- No Fuse Indicator — Clean panel design where external monitoring or relay-based protection is used for blown-fuse detection.
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M5412 |
| Series | Bussmann 170M |
| Amperage Rating | 630 A |
| Voltage Rating (AC) | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Fuse Type | High Speed Square Body |
| Construction | Square body 2BN/50 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 Eaton Bussmann 170M5412 is the preferred choice when protecting high-power semiconductor devices — thyristors, SCRs, diodes, and IGBTs — in industrial power conversion equipment. Its Class aR rating means it is optimized exclusively for semiconductor protection, acting faster than general-purpose gG or gR fuses to limit the let-through energy (I²t) before semiconductor junction damage occurs. It is particularly well-suited for DC common bus architectures, regenerative drives, rectifier bridges, and large VFD input stages operating at 690 V.
In Indian industries — including steel plants, cement factories, automotive manufacturing, textile mills, and petrochemical refineries in and around Coimbatore, Chennai, Pune, and Mumbai — medium to large variable frequency drives and soft starters running at 690 V are increasingly common. The 630 A rating of the 170M5412 covers motor drives and converter systems from approximately 400 kW upwards at 690 V, making it a frequently specified fuse in MCC panels, converter cubicles, and drive panel assemblies.
When selecting this fuse, confirm that the I²t let-through value of the 170M5412 is within the semiconductor manufacturer’s withstand rating. Also verify that the fuse holder or busbar system is rated for the 2BN/50 square body format and compatible with bolt-in termination torque requirements. Shansen Enterprises can assist panel builders and OEMs in Coimbatore and across India with cross-reference support and application-specific selection guidance.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — supplying genuine Eaton Bussmann products with full traceability
- 100% genuine products supplied with manufacturer warranty and documentation
- Pan-India delivery to all major cities and industrial hubs
- WhatsApp technical support for fuse selection, cross-referencing, and application queries
- Competitive bulk pricing for panel builders, OEMs, EPC contractors, and system integrators
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and DIN rail mounting bases compatible with 2BN/50 square body format
- Eaton Bussmann 170M Series fuse links in adjacent current ratings (500 A, 560 A, 710 A, 800 A) for drive system coordination
- Eaton Bussmann striker pin / blown fuse indicators (retrofit accessories for external signaling)
- Eaton Bussmann Class aR fuses in lower voltage ratings for 500 V and 600 V drive applications
- Eaton busbar systems and conductor rails for 2BN/50 square body fuse mounting
- Surge protection devices (SPDs) and semiconductor-grade contactors for complete drive protection coordination
Frequently Asked Questions
What is the difference between a Class aR fuse and a Class gR fuse for semiconductor protection?
A Class aR fuse is designed exclusively for semiconductor protection and operates only in the overcurrent range above a certain threshold — it does not provide overload protection on its own and must be used in combination with a circuit breaker or contactor for full circuit protection. A Class gR fuse, on the other hand, provides full-range protection from overload through to short circuit. For semiconductor applications such as thyristor stacks, rectifiers, and IGBTs, Class aR fuses like the Eaton Bussmann 170M5412 are typically preferred because they are optimized to minimize let-through energy (I²t) at fault current levels, protecting the semiconductor junction before it can be damaged.
What does the 200 kA interrupt rating mean for the Eaton Bussmann 170M5412?
The 200 kA interrupt rating means the 170M5412 can safely interrupt prospective short-circuit currents up to 200,000 amperes at its rated voltage of 690 V AC. This is the maximum fault current the fuse can clear without catastrophic failure — without rupturing, arcing externally, or causing secondary damage to the panel. In practice, most Indian industrial installations have prospective short-circuit currents well below this level, so the 200 kA rating provides a substantial safety margin and makes this fuse suitable even for installations close to large transformer substations.
Is the Eaton Bussmann 170M5412 suitable for DC bus protection in VFD panels?
Yes. The 170M5412 is explicitly rated for DC common bus and DC drive protection applications. When used on the DC bus side of a VFD or converter, the voltage rating must be verified against the actual DC bus voltage — which for a 690 V AC system is typically around 975 V DC peak. Always consult the Eaton Bussmann 170M Series datasheet for DC voltage de-rating guidelines and confirm the fuse’s DC interrupting capability with the specific circuit inductance and time constant of your application. Shansen Enterprises can provide application-specific guidance for DC bus fuse selection in India.
Does the Eaton Bussmann 170M5412 require a special fuse holder?
Yes. The 170M5412 uses a square body 2BN/50 format with bolt-in connections, so it requires a compatible fuse holder, busbar, or mounting system designed for the 2BN/50 body size. Standard cylindrical or NH fuse holders are not compatible. Eaton Bussmann offers a range of 170M Series fuse holders and mounting accessories specifically for the square body format. Shansen Enterprises can help you identify the correct fuse holder and accessory set to match your panel design requirements.
What Indian industries commonly use the Eaton Bussmann 170M Series 630 A fuse?
The 170M5412 at 630 A, 690 V is widely used in heavy industries across India that operate large variable frequency drives, soft starters, and power converters. Common sectors include steel and metal processing plants, cement manufacturing, paper and pulp mills, automotive press shops, petrochemical and refinery facilities, water treatment pump stations, and large HVAC installations in commercial buildings. Panel builders and drive OEMs in industrial clusters around Coimbatore, Pune, Ahmedabad, Faridabad, and Chennai regularly source this series for MCC and drive panel assemblies.
How do I order the Eaton Bussmann 170M5412 from Shansen Enterprises?
Ordering the Eaton Bussmann 170M5412 from Shansen Enterprises is straightforward. You can reach us via WhatsApp or email using the contact buttons on this page — simply share the catalog number (170M5412), the required quantity, and your delivery location anywhere in India. Our team will respond promptly with availability, pricing, and estimated delivery timelines. Shansen Enterprises is an authorized Eaton channel partner based in Coimbatore, Tamil Nadu, and supplies genuine Eaton Bussmann products with full documentation to customers across India.
