Description
Overview
The Eaton Bussmann 170M3816D is a high speed square body semiconductor fuse rated 250 A at 690 V AC, designed for the protection of power semiconductors including thyristors, diodes, IGBTs, and SCRs in high-demand industrial applications. Part of the proven Bussmann 170M Series, this fuse conforms to DIN 43620 DIN 1 format with knife blade contacts, ensuring drop-in compatibility with standard semiconductor fuse holders and bus bar mounting systems. Its Class aR rating and 200 kA breaking capacity make it the correct choice wherever fast, reliable semiconductor fault clearing is required.
Key Features
- 250 A Current Rating — handles continuous load currents up to 250 A in semiconductor converter circuits
- 690 V AC Rated Voltage — suitable for standard industrial power distribution voltages across Indian manufacturing plants
- 200 kA Interrupt Rating — high breaking capacity ensures safe fault clearing under worst-case short-circuit conditions
- Class aR Fuse — purpose-built for semiconductor protection with ultra-fast current limiting characteristics
- DIN 43620 DIN 1 Format, Knife Blade Contacts — industry-standard square body construction for direct replacement compatibility
- Dual Fuse Indicator (Type D) — provides visual blown-fuse indication from two sides, simplifying maintenance inspection
- IEC 60269-4 Compliant — meets international standard for high speed fuses used in semiconductor protection
- CE Marked and RoHS Compliant — meets European directives for industrial equipment and hazardous substance restrictions
- IEC Rated — independently certified for quality assurance in critical power electronics applications
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M3816D |
| Series | Bussmann 170M |
| Amperage Rating | 250 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Construction | DIN 43620 DIN 1 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 170M3816D is the correct selection for engineers requiring semiconductor-grade short-circuit protection in AC-fed converter circuits operating at up to 690 V. Its Class aR characteristic delivers the sub-cycle current limiting action needed to protect thyristors, diodes, and IGBT modules that cannot withstand the let-through energy tolerated by general-purpose fuses. Typical installations include three-phase DC drives, variable frequency drives (VFDs), soft starters, rectifier bridges, and thyristor stacks where semiconductor junction protection is the primary design requirement.
In Indian industrial environments — including Coimbatore’s textile machinery sector, automotive component manufacturing, steel rolling mills, and large-scale HVAC plants — power converters and DC bus systems are routinely exposed to transient overloads and short-circuit events. The 170M3816D’s 200 kA breaking capacity and DIN 1 knife blade format make it a trusted fit for OEM panel builders and MRO replacement scenarios alike, where space-efficient, high-performance fuse protection is non-negotiable.
When specifying this fuse, confirm that your fuse holder or bus bar system is rated for DIN 43620 DIN 1 format knife blade contacts and that the continuous operating current does not exceed the fuse’s 250 A rating after applying any de-rating factors for elevated ambient temperature or enclosure type. Consult Shansen Enterprises for application-specific guidance and coordinated fuse-holder selection.
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 industrial cities and tier-2 locations
- WhatsApp technical support for product selection, cross-reference, and application queries
- Bulk pricing and project-based procurement support for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series DIN 1 fuse holders and bus bar mounting blocks
- Eaton Bussmann 170M Series companion fuses for three-phase semiconductor protection sets
- DIN 43620 compliant fuse carrier bars and mounting hardware
- Eaton semiconductor fuse monitoring and blown-fuse indicator accessories
- Eaton Bussmann 170M Series fuses in adjacent current ratings (200 A, 315 A) for coordinated protection design
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M3816D?
Class aR designates a fuse specifically designed for semiconductor protection. Unlike general-purpose Class gG fuses, a Class aR fuse operates with an ultra-fast current-limiting characteristic that clears fault current within a fraction of a cycle, preventing the let-through energy from exceeding the I²t withstand rating of thyristors, diodes, and IGBT modules. The 170M3816D’s aR rating makes it unsuitable as a standalone overcurrent protection device for cables or motors — it should always be applied in conjunction with upstream fusing or circuit breakers rated for full overcurrent protection.
Is the 170M3816D suitable for DC bus protection in VFD applications?
Yes. The 170M3816D is explicitly rated for DC common bus and DC drive applications. Its high-speed current-limiting action provides the fast fault clearing required to protect the power semiconductor devices inside variable frequency drives and DC drive systems. Always verify the DC voltage rating with the Eaton Bussmann datasheet for your specific circuit configuration, and consult Shansen Enterprises if you need application confirmation for your VFD make and model.
What fuse holder is compatible with the Eaton Bussmann 170M3816D?
The 170M3816D is built to DIN 43620 DIN 1 format with knife blade contacts. It is compatible with fuse holders and bus bar mounting systems designed for the DIN 1 square body semiconductor fuse format. Eaton Bussmann offers a range of dedicated holders and mounting hardware for the 170M Series. Contact Shansen Enterprises to confirm the correct holder part number for your panel layout and current rating requirements.
What does the Dual Indicator (Type D) on the 170M3816D mean?
The Dual Indicator (Type D) is a mechanical blown-fuse indicator that provides a visible signal from two sides of the fuse body when the fuse has operated. This feature simplifies maintenance inspections in switchgear panels and converter cabinets by allowing technicians to identify a blown fuse without removing it from the holder. It reduces panel downtime during fault diagnosis in industrial environments where fast recommissioning is critical.
Can the 170M3816D replace other manufacturers’ 250 A DIN 1 semiconductor fuses?
The DIN 43620 DIN 1 format provides dimensional interchangeability for knife blade contact mounting, but current-limiting characteristics (I²t values and time-current curves) vary between manufacturers and product families. A direct mechanical fit does not guarantee that the replacement fuse will provide equivalent semiconductor protection. Always cross-reference the I²t let-through values and consult the Eaton Bussmann 170M Series datasheet and Shansen Enterprises’ technical team before substituting fuses in semiconductor protection circuits.
How do I order the Eaton Bussmann 170M3816D from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M3816D directly through Shansen Enterprises via WhatsApp or email using the contact buttons on this page. Please mention the catalog number 170M3816D, required quantity, and delivery location so our team can provide an accurate price and lead time. Shansen Enterprises supplies genuine Eaton Bussmann products with pan-India delivery from Coimbatore, Tamil Nadu. Bulk orders and project-based procurement are welcome.
