Description
Overview
The Eaton Bussmann 170M5814D is a high speed square body semiconductor fuse rated 800 A at 690 V AC, designed specifically for the protection of thyristors, diodes, IGBTs, and other semiconductor devices in high-power drive and converter systems. Constructed to the DIN 43620 DIN 2 standard with knife blade contacts, this fuse integrates into standard DIN-format fuse holders commonly used in industrial switchgear and power conversion panels across India. Its 200 kA breaking capacity and Class aR rating ensure it clears faults before semiconductor junctions are damaged, preventing costly downtime.
Key Features
- 800 A Amperage Rating — handles high continuous current loads in large-scale drives and converter systems
- 690 V AC Rated Voltage — suitable for standard LV industrial power systems up to 690 V
- 200 kA Breaking Capacity — extremely high interrupt rating for reliable fault clearing in stiff supply networks
- Class aR Rating — fast-acting current-limiting characteristic specifically optimised for semiconductor protection
- DIN 43620 DIN 2 Format with Knife Blade Contacts — direct fit for standard DIN-format fuse bases, simplifying panel assembly and replacement
- Dual Fuse Indicator (Type D) — provides both visual blown indication and auxiliary contact output for remote monitoring and control interlocks
- IEC 60269-4 Compliant — meets international standard for semiconductor protection fuses, accepted by inspection bodies across India
- CE Marked and RoHS Compliant — meets European safety and environmental directives, suitable for export-oriented OEM equipment
- Bussmann 170M Series — part of Eaton’s globally proven high speed fuse platform with consistent quality and broad accessory support
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M5814D |
| Series | Bussmann 170M |
| Amperage Rating | 800 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Construction / Format | DIN 43620 DIN 2, Knife Blade Contacts |
| Fuse Indicator | Dual Indicator (Type D) |
| Standard | IEC 60269-4 |
| Certifications | IEC Rated |
| 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 170M5814D is the correct choice when you need to protect high-power semiconductor assemblies — particularly thyristor stacks, diode bridges, IGBT modules, and rectifier packs — operating at 690 V AC on stiff industrial supplies. At 800 A, it is sized for large DC drives, heavy-duty VFDs, and multi-megawatt power converters where fault currents can rise extremely rapidly. The Class aR characteristic means the fuse is designed exclusively for semiconductor protection: it will not provide back-up overload protection for cables or motors, and must be applied in conjunction with appropriate upstream protection devices.
In Indian industrial environments — including steel plants, aluminium smelters, paper mills, mining equipment, and large HVAC installations in Coimbatore and across Tamil Nadu — the 690 V, 800 A rating covers the higher-voltage drive systems increasingly common in energy-intensive industries. The DIN 43620 DIN 2 knife blade format is directly compatible with the fuse bases used in standard IEC-designed MCC and drive panels assembled by Indian panel builders and OEMs.
When selecting this fuse, confirm the I²t let-through value of the 170M5814D against the I²t withstand rating of the semiconductor device being protected. Also verify that the continuous operating current does not exceed the fuse’s rated amperage after applying appropriate derating for elevated ambient temperatures typical in Indian industrial sites. For parallel drive topologies or bus bar protection, consult Shansen Enterprises for multi-fuse selection guidance.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine product with full manufacturer traceability
- 100% genuine Eaton Bussmann fuses supplied with warranty — no counterfeit risk
- Pan-India delivery — serving panel builders, OEMs, and plant maintenance teams from Coimbatore to all major industrial hubs
- WhatsApp technical support — get quick answers on fuse selection, I²t coordination, and compatible fuse bases
- Bulk and project pricing available for panel builders, system integrators, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series DIN 43620 DIN 2 fuse holders and fuse bases
- Auxiliary contact modules for Type D indicator wiring to PLC or relay interlocks
- Eaton Bussmann 170M Series fuses in adjacent amperage ratings (630 A, 900 A, 1000 A) for drive system coordination
- DIN rail and busbar mounting accessories for 170M Series square body fuses
- Upstream BS88 or NH back-up fuses for cable and transformer protection coordination
- Eaton drive protection fuse holders compatible with DIN 43620 knife blade format
Frequently Asked Questions
What does Class aR mean and why is it required for semiconductor protection?
Class aR (current-limiting, semiconductor protection range) defines a fuse that operates exclusively in the current-limiting range — it clears faults so rapidly that the let-through energy (I²t) is kept below the withstand threshold of the semiconductor junction. Unlike general-purpose gG or gR fuses, an aR fuse has no intentional time-delay and is not designed for overload protection of cables. It is the correct and required fuse class for direct protection of thyristors, diodes, IGBTs, and rectifier modules where even a brief overcurrent can destroy the device.
Is the 170M5814D suitable for DC bus and DC drive applications?
Yes. The 170M5814D is explicitly rated and applied for DC common bus protection, DC drives, and DC-side rectifier circuits. When applying this fuse on the DC side, always verify the DC voltage rating from the Eaton Bussmann datasheet for this catalog number against your actual DC bus voltage, as DC interrupt ratings may differ from the stated AC voltage rating. Shansen Enterprises can provide the detailed datasheet on request before you finalise your selection.
What is the significance of the Dual Indicator (Type D) on the 170M5814D?
The Dual Indicator (Type D) on the 170M5814D provides two forms of blown-fuse signalling simultaneously. First, a visible mechanical flag pops out so maintenance personnel can identify a blown fuse at a glance without removing it from the holder. Second, an auxiliary microswitch contact changes state upon fuse operation, allowing the signal to be wired to a PLC input, relay, or alarm system for remote fault detection, drive shutdown interlocks, or SCADA annunciation. This dual function reduces diagnostic time and supports automated fault response in modern drive panels.
Which fuse holder or fuse base is compatible with the 170M5814D?
The 170M5814D is built to the DIN 43620 DIN 2 format with knife blade contacts. It requires a compatible DIN 43620 DIN 2 fuse base or holder. Eaton Bussmann offers a range of matching fuse holders within the 170M Series accessory platform. The correct holder must match the fuse’s physical size (DIN 2), current rating, and voltage rating. Contact Shansen Enterprises in Coimbatore with your panel layout details and we will confirm the correct fuse base part number and arrange supply together with the fuse.
Does the 170M5814D comply with Indian and international electrical standards?
Yes. The 170M5814D is rated and tested to IEC 60269-4, the internationally recognised standard for semiconductor protection fuses. It is CE Marked and RoHS Compliant, meeting European safety and environmental requirements. IEC-rated products are accepted by electrical inspectors and statutory authorities across India for industrial installations, making this fuse suitable for use in Indian plants, OEM equipment exported from India, and projects requiring IEC-based design documentation.
How do I order the Eaton Bussmann 170M5814D from Shansen Enterprises?
You can request a quote directly from Shansen Enterprises by clicking the WhatsApp button on this page or sending an email inquiry with your requirement details — including catalog number 170M5814D, required quantity, and delivery location. Our team in Coimbatore will respond promptly with pricing, availability, and lead time. We supply pan-India and can assist with bulk orders, project requirements, and technical selection support for the complete 170M Series range.
