Description
Overview
The Eaton Bussmann 170M5809D is a high speed square body semiconductor fuse rated 450 A at 690 V AC, delivering 200 kA breaking capacity in a DIN 43620 DIN 2 format with knife blade contacts. Part of the trusted Bussmann 170M Series, it is engineered for ultra-fast current limiting to protect sensitive semiconductor devices in industrial power electronics. The dual indicator (Type D) gives maintenance teams immediate visual confirmation of a fuse operation, reducing downtime in critical drive and converter applications.
Key Features
- 450 A Current Rating — handles high continuous loads in industrial semiconductor circuits without nuisance operation
- 690 V AC Rated Voltage — compatible with standard industrial 690 V power distribution systems across India
- 200 kA Interrupt Rating — superior breaking capacity protects downstream semiconductors even under severe fault conditions
- Class aR Fast-Acting — optimized for semiconductor protection with rapid current cutoff before devices are damaged
- DIN 43620 DIN 2 Format with Knife Blade Contacts — drop-in fit for DIN 2 size fuse holders and switch-disconnectors, simplifying panel design
- Dual Indicator Type D — provides two independent blown-fuse indicators for enhanced fault detection in multi-fuse assemblies
- IEC 60269-4 Compliant — meets international standards for high speed fuses used in semiconductor protection
- CE Marked and RoHS Compliant — ready for export projects and compliant with European environmental directives
- IEC Certified — independently verified performance for reliable use in critical industrial installations
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M5809D |
| Series | Bussmann 170M |
| Amperage Rating | 450 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Fuse Type | High Speed Square Body |
| Construction | DIN 43620 DIN 2 format with knife blade contacts |
| Fuse Indicator | Dual Indicator (Type D) |
| 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 170M5809D is the right choice when protecting semiconductor devices — IGBTs, thyristors, diodes, and MOSFETs — in high-power industrial drive and converter systems. Its Class aR rating means it is purpose-built to operate before the semiconductor’s I²t damage threshold is reached, unlike general-purpose gG fuses which are too slow for solid-state device protection. At 450 A and 690 V, this fuse is well-suited for the input or output stages of large VFDs, DC drives, active front ends, and rectifier bridges operating on 415 V or 690 V bus systems.
In Indian industries such as steel, cement, paper, and petrochemicals, where large motor drives and power converters are common, selecting the correct high speed fuse is critical to avoid costly semiconductor replacement. The DIN 2 knife blade format ensures compatibility with widely used European-style fuse holders and switch-disconnectors already deployed in Indian switchgear panels. When specifying for a new panel or retrofitting an existing drive system, always verify that the fuse holder accepts DIN 43620 DIN 2 format before ordering.
The dual Type D indicator on the 170M5809D is particularly useful in multi-fuse drive input assemblies where identifying which phase fuse has operated without dismantling the panel saves significant maintenance time. Panel builders and OEMs in Coimbatore and across India working on VFD panels, converter cabinets, and thyristor drive enclosures will find this fuse a reliable and standards-compliant solution.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — source 170M Series fuses directly from an official partner
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty
- Pan-India delivery to all major cities and industrial zones
- WhatsApp technical support for fuse selection, cross-referencing, and application queries
- Bulk pricing available for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders (DIN 43620 DIN 2 format)
- Eaton Bussmann 170M Series switch-disconnectors compatible with DIN 2 knife blade fuses
- Eaton Bussmann 170M Series companion fuses in adjacent ampere ratings (400 A, 500 A) for system coordination studies
- Fuse blown indicator signal contacts and remote indication accessories for 170M Series
- DIN rail mounting hardware and busbar connectors for 690 V power distribution assemblies
Frequently Asked Questions
What does Class aR mean on the Eaton Bussmann 170M5809D?
Class aR designates a fuse designed exclusively for semiconductor protection. Unlike Class gG general-purpose fuses, a Class aR fuse has a very fast melting characteristic optimized to clear fault currents before the I²t energy can damage IGBTs, thyristors, diodes, or other solid-state devices. The 170M5809D should never be substituted with a gG fuse in semiconductor protection circuits.
What fuse holder is compatible with the 170M5809D?
The 170M5809D is built to DIN 43620 DIN 2 format with knife blade contacts. It requires a DIN 2 compatible fuse holder or switch-disconnector that accepts the 170M Series square body form factor. Eaton Bussmann offers matched 170M Series fuse holders for this purpose. Please contact Shansen Enterprises to confirm the correct holder for your application before ordering.
Can the 170M5809D be used on a 415 V system in India?
Yes. The 170M5809D is rated at 690 V AC, which means it is fully suitable for use on 415 V AC systems as the operating voltage is well within the fuse’s rated voltage. Using a higher-rated voltage fuse on a lower-voltage system does not affect protection performance and is a common and acceptable practice in Indian industrial installations.
What does the Dual Indicator Type D mean on this fuse?
The Dual Indicator (Type D) means the fuse body carries two independent mechanical indicators that pop out visibly when the fuse operates. This is particularly useful in three-phase drive input assemblies or multi-fuse converter panels where quickly identifying the operated fuse without removing it saves time. Some configurations also allow connection of remote signal contacts to annunciate a blown fuse to a PLC or control system.
Is the 170M5809D suitable for DC bus protection in VFD panels?
Yes, the 170M5809D is specifically listed for DC common bus and DC drive applications. High speed Class aR fuses are standard practice for protecting the semiconductor devices on the DC bus of VFD panels, active front ends, and regenerative drives. Ensure that the DC voltage of your bus does not exceed the fuse’s DC voltage rating — verify this from the product datasheet or contact Shansen Enterprises for confirmation before installation.
How do I order the Eaton Bussmann 170M5809D from Shansen Enterprises?
You can request a quote directly by clicking the WhatsApp button on this page or by sending an email to Shansen Enterprises with the catalog number 170M5809D, required quantity, and your delivery location. Our team in Coimbatore will respond with pricing, availability, and estimated delivery time across India. For bulk orders or recurring requirements, ask about our OEM and panel builder pricing programs.
