Description
Overview
The Eaton Bussmann 170M1568D is a high speed square body semiconductor fuse rated at 125 A and 690 V AC, offering a 200 kA breaking capacity under IEC 60269-4. Part of the trusted Bussmann 170M Series, this fuse is engineered for precise and rapid overcurrent protection of semiconductor devices including thyristors, SCRs, IGBTs, and diode bridges. Its DIN 43620 DIN 000 knife blade contact construction ensures reliable fitment in standard semiconductor fuse holders used across Indian industrial installations.
Key Features
- 125 A Current Rating — accurately sized for semiconductor protection in medium-power drive and converter applications
- 690 V AC Rated Voltage — suitable for standard industrial three-phase supply systems in India
- 200 kA Interrupt Rating — exceptionally high breaking capacity ensures safe fault clearance without collateral damage to equipment
- Class aR Fuse — fast-acting current-limiting action specifically optimised for semiconductor device protection
- DIN 43620 DIN 000 Format with Knife Blade Contacts — industry-standard form factor for direct replacement and easy installation in compatible fuse holders
- Dual Fuse Indicator (Type D) — provides both local visual indication and remote trip signalling for faster fault diagnosis and reduced downtime
- IEC 60269-4 Compliant — meets international standards for high speed fuses used in semiconductor protection
- CE Marked and RoHS Compliant — approved for use in equipment exported to European markets and environmentally regulated applications
- Low I²t Characteristics — minimises let-through energy, protecting sensitive power semiconductor junctions effectively
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M1568D |
| Series | Bussmann 170M |
| Amperage Rating | 125 A |
| Rated Voltage AC | 690 V |
| Interrupt Rating | 200 kA |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Construction | DIN 43620 DIN 000 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 170M1568D is the right choice when you need fast-acting semiconductor protection for power electronics operating at 125 A on a 690 V AC supply. Its Class aR rating means it is designed exclusively for semiconductor protection — it will operate faster than general-purpose gG or gR fuses, clamping let-through energy before it reaches the critical junction temperature of IGBTs, SCRs, or thyristors. This makes it the preferred selection for DC common bus architectures, multi-drive panels, regenerative drive systems, and high-power rectifier bridges where nuisance tripping must be avoided but semiconductor integrity cannot be compromised.
In the Indian industrial context, this fuse is widely specified in industries such as steel rolling mills, paper and textile manufacturing, water treatment pump drives, cement plant conveyors, and EV charging infrastructure — wherever variable frequency drives, soft starters, or controlled rectifiers form the backbone of the power conversion chain. Panel builders and OEMs in Coimbatore, Chennai, Pune, and Ahmedabad regularly use the Bussmann 170M Series as the de facto standard for semiconductor fuse protection.
When selecting this fuse, verify that your fuse holder or fuse switch disconnector is rated for DIN 43620 DIN 000 knife blade contacts and that the continuous load current does not exceed 125 A under the ambient thermal conditions of your enclosure. Always derate per IEC guidelines for elevated ambient temperatures or high-altitude installations.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — genuine products, not grey market imports
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty
- Pan-India delivery to all major industrial cities and tier-2 locations
- WhatsApp technical support for product selection, cross-referencing, and installation queries
- Bulk pricing and project-rate quotations for panel builders, OEMs, and EPC contractors
Compatible Products & Accessories
- Eaton Bussmann 170M Series fuse holders compatible with DIN 43620 DIN 000 knife blade contacts
- Eaton Bussmann semiconductor fuse switch disconnectors for 170M Series
- Bussmann 170M Series fuses in adjacent current ratings (100 A, 160 A) for drive system coordination
- Eaton remote fuse monitoring and indication accessories compatible with Type D dual indicator
- DIN rail mounting bases and busbar connectors for 170M Series fuse holders
- Eaton surge protective devices (SPDs) for upstream protection of drive panels
Frequently Asked Questions
What does Class aR mean for the Eaton Bussmann 170M1568D?
Class aR (current-limiting, restricted range) is a fuse classification under IEC 60269-4 specifically designed for semiconductor protection. Unlike general-purpose fuses, Class aR fuses operate at extremely high speed to limit let-through energy (I²t) before it can destroy sensitive semiconductor junctions such as thyristors, SCRs, or IGBTs. The 170M1568D must be used in conjunction with a backup fuse or circuit breaker for overload protection, as aR fuses are not intended to carry overcurrents below their minimum breaking current.
Is the 170M1568D suitable for DC applications such as DC drives and common bus systems?
Yes. The Eaton Bussmann 170M1568D is explicitly listed for use in DC common bus systems, DC drives, and rectifier applications. However, for DC voltage ratings, you should consult the Eaton Bussmann datasheet or contact Shansen Enterprises, as DC voltage ratings for semiconductor fuses depend on circuit configuration and may differ from the AC rating of 690 V. Our technical team can assist you in confirming suitability for your specific DC bus voltage.
What is the significance of the Dual Indicator (Type D) on the 170M1568D?
The Dual Indicator (Type D) provides two forms of fault notification: a visual pop-up striker for local inspection at the panel, and a microswitch or auxiliary contact output for remote indication to a PLC, SCADA system, or alarm panel. This dual functionality is particularly valuable in large industrial installations in India where drive panels may be located in remote motor control centres (MCCs) away from the control room, enabling faster fault response and reduced production downtime.
Which fuse holder is compatible with the Eaton Bussmann 170M1568D?
The 170M1568D uses a DIN 43620 DIN 000 format with knife blade contacts. You need a fuse holder or fuse switch disconnector rated for this body size and contact configuration. Eaton Bussmann offers a range of compatible fuse holders within their 170M Series accessory lineup. Please contact Shansen Enterprises in Coimbatore with your panel layout requirements and we will recommend the correct holder, ensuring mechanical and electrical compatibility.
Does the 170M1568D carry CE marking and RoHS compliance?
Yes. The Eaton Bussmann 170M1568D is CE Marked and RoHS Compliant, making it suitable for equipment manufactured for the European Union market and for environmentally regulated procurement programmes. It is also IEC Rated under IEC 60269-4, which is the internationally recognised standard for high speed fuses used in semiconductor protection applications.
How do I order the Eaton Bussmann 170M1568D from Shansen Enterprises?
You can request a quote for the 170M1568D directly through Shansen Enterprises via WhatsApp or email using the contact buttons on this page. Share your required quantity, delivery location, and any associated accessory requirements. As an authorized Eaton Channel Partner in Coimbatore, we supply genuine Bussmann 170M Series fuses with full manufacturer traceability and warranty, and we offer pan-India delivery including to Chennai, Bengaluru, Mumbai, Pune, Hyderabad, and all major industrial centres.
