Description
Overview
The Eaton Bussmann 170M8554D is a high speed square body semiconductor fuse rated at 1250 A and 690 V AC, belonging to the Bussmann 170M Series. Constructed in DIN 43620 DIN 3 format with knife blade contacts, it delivers a 200 kA breaking capacity under IEC 60269-4, providing reliable protection for sensitive semiconductor devices. Its dual indicator (Type D) simplifies fault diagnosis in industrial control panels and power conversion equipment.
Key Features
- 1250 A Current Rating — handles high continuous load currents in demanding power electronics applications
- 690 V AC Voltage Rating — suitable for standard industrial low voltage distribution networks
- 200 kA Interrupt Rating — delivers exceptional fault current interruption capacity to protect costly semiconductor devices
- Class aR Fuse — fast-acting semiconductor protection class per IEC 60269-4, optimized for thyristors, diodes, and IGBTs
- DIN 43620 DIN 3 Format with Knife Blade Contacts — standardized square body construction for easy integration into existing fuse holders and busbars
- Dual Indicator (Type D) — provides visible blown-fuse indication from multiple angles, reducing downtime during fault diagnosis
- CE Marked and RoHS Compliant — meets European compliance requirements for industrial installations and export equipment
- IEC Rated and Certified — internationally recognized certification ensures consistent performance and regulatory acceptance
- Part of the Proven Bussmann 170M Series — wide range of amperage and voltage options available for complete system protection coordination
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M8554D |
| Series | Bussmann 170M |
| Amperage Rating | 1250 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 | DIN 43620 DIN 3 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 170M8554D is purpose-built for semiconductor protection in high-power industrial environments. Its Class aR rating means it is specifically designed to protect semiconductor devices such as thyristors, SCRs, diodes, and IGBTs — components that cannot withstand the let-through energy permitted by general-purpose fuse classes. At 1250 A and 690 V, this fuse is well matched to large variable frequency drives (VFDs), DC common bus systems, soft starters, power rectifiers, and thyristor stacks found in heavy industrial machinery and process control systems.
The DIN 43620 DIN 3 knife blade format ensures dimensional compatibility with a wide range of standard fuse holders and busbars from Eaton and other manufacturers, simplifying retrofit and new installation projects. The 200 kA breaking capacity makes it suitable for installations close to high fault-current sources such as transformer secondary busbars in steel plants, textile mills, and automotive manufacturing facilities across India.
In the Indian industrial context, this fuse is commonly specified in panel boards used for motor drives in cement plants, paper mills, chemical processing units, and large HVAC installations in Coimbatore, Pune, Chennai, and other manufacturing hubs. Engineers selecting fuses for semiconductor protection should verify I²t coordination with the semiconductor device datasheet to ensure the fuse clears before the device reaches its damage threshold.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products with full manufacturer backing
- 100% genuine Eaton Bussmann products supplied with warranty
- Pan-India delivery to all major cities and industrial zones
- WhatsApp technical support for application selection and sizing queries
- Bulk pricing available for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders and fuse bases (DIN 43620 DIN 3 compatible)
- Eaton Bussmann 170M Series fuses in adjacent current ratings (1000 A, 1100 A, 1400 A) for coordination studies
- DIN 3 knife blade fuse mounting busbars and rail adapters
- Eaton semiconductor fuse indicator microswitches and remote signal accessories
- Eaton Bussmann Class aR fuse selection guides and I²t coordination charts
- Surge protection devices (SPDs) for AC drive input panels
Frequently Asked Questions
What does the Class aR rating mean for the Eaton Bussmann 170M8554D?
Class aR designates a fuse that provides protection only in the high overload and short-circuit range — it is specifically optimized to protect semiconductor devices such as thyristors, diodes, SCRs, and IGBTs. Unlike general-purpose Class gG fuses, Class aR fuses operate faster at high fault currents, limiting the let-through energy (I²t) to levels that semiconductor junctions can survive. The 170M8554D must therefore always be used alongside an upstream general-purpose fuse or circuit breaker that handles low-level overloads.
Is the 170M8554D suitable for use in VFD and DC drive applications?
Yes. The 170M8554D is rated for semiconductor protection in DC common bus systems, DC drives, variable frequency drives (VFDs), soft starters, and rectifiers. Its fast-acting Class aR characteristic and 200 kA breaking capacity make it well suited to protect the input rectifier bridge or DC bus components in VFD panels. Always verify the fuse I²t rating against the semiconductor device’s rated I²t withstand to confirm correct coordination.
What fuse holder or base is compatible with the 170M8554D?
The 170M8554D uses a DIN 43620 DIN 3 format with knife blade contacts. It is compatible with Eaton Bussmann DIN 3 fuse holders and mounting bases designed for the 170M Series. When selecting a fuse holder, confirm the current and voltage ratings of the holder match or exceed 1250 A and 690 V AC. Consult the Eaton Bussmann 170M Series fuse holder catalog or contact Shansen Enterprises for a matched holder recommendation.
What does the Dual Indicator (Type D) on the 170M8554D do?
The Dual Indicator (Type D) is a built-in blown-fuse indicator that provides a visible signal when the fuse has operated. The dual configuration means the indicator can be viewed from more than one direction, which is useful in densely packed panels where direct line-of-sight to a single indicator may be obstructed. Some indicator types also support connection to a microswitch for remote alarm signaling — check the Eaton 170M accessory catalog for compatible microswitch options for the Type D indicator.
Does the 170M8554D carry CE and RoHS compliance?
Yes. The Eaton Bussmann 170M8554D is CE Marked and RoHS Compliant, and carries IEC certification per IEC 60269-4. CE Marking confirms it meets applicable European Union directives for low voltage electrical equipment. RoHS compliance ensures the product is free from restricted hazardous substances, which is increasingly required for equipment exported from India to European markets or used in environmentally sensitive industries.
How do I order the Eaton Bussmann 170M8554D from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 170M8554D directly through Shansen Enterprises by clicking the WhatsApp button on this page or by sending an email to our sales team at shansenenterprises.com. Please mention the catalog number 170M8554D, required quantity, and your delivery location anywhere in India. Our team will respond with pricing, availability, and estimated delivery timeline. Bulk orders for panel builders and OEMs are welcome, and we offer competitive pricing as an authorized Eaton channel partner in Coimbatore.
