Description
Overview
The Eaton Bussmann 170M3811D is a high speed square body semiconductor fuse from the trusted 170M Series, rated at 80 A and 690 V AC with a Class aR rating per IEC 60269-4. Designed in the DIN 43620 DIN 1 format with knife blade contacts, this fuse delivers an exceptional 200 kA breaking capacity to protect power electronic circuits from destructive fault currents. Its dual indicator (Type D) provides clear visual and remote fault signalling, making it a dependable choice for industrial power conversion systems across India.
Key Features
- Class aR Rating — Purpose-built for semiconductor protection, offering ultra-fast clearing of fault currents before damage occurs to diodes, thyristors, and IGBTs
- 200 kA Breaking Capacity — Handles extreme fault levels found in heavy industrial and power conversion environments
- 690 V AC Rating — Suitable for standard industrial three-phase distribution systems widely used across Indian manufacturing facilities
- DIN 43620 DIN 1 Format — Standardized square body construction ensures compatibility with existing DIN-format fuse holders and busbars
- Knife Blade Contacts — Positive mechanical engagement for low-resistance, reliable connections under high-current conditions
- Dual Indicator (Type D) — Provides both visual blown-fuse indication and microswitch output for remote monitoring and alarm integration
- IEC 60269-4 Compliant — Internationally recognized standard for semiconductor fuse performance and safety
- CE Marked and RoHS Compliant — Meets European directives for equipment safety and environmental compliance
- Low I²t Let-Through — Minimizes energy let-through to protect downstream semiconductor devices during fault conditions
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 170M3811D |
| Series | Bussmann 170M |
| Amperage Rating | 80 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 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 170M3811D is specifically designed for semiconductor protection applications where standard gG or gL fuses are too slow to prevent damage to power electronic components. Class aR fuses like this one are selected when the primary goal is protecting diodes, SCRs, thyristors, IGBTs, and MOSFETs in converters, rectifiers, soft starters, and variable frequency drives (VFDs). The ultra-fast clearing action ensures that the peak let-through current and I²t energy remain within the withstand ratings of the semiconductor devices being protected.
In DC common bus architectures and multi-drive systems, the 170M3811D provides individual drive protection while allowing the rest of the system to continue operating after a single fault. Its 690 V AC rating makes it directly applicable to standard 415 V and 690 V three-phase industrial systems prevalent across Indian manufacturing sectors including textiles, steel, cement, automotive, and process industries in regions such as Coimbatore, Chennai, Pune, and Ahmedabad.
When specifying this fuse, verify that the continuous load current does not exceed 80 A and confirm the available fault current at the installation point is within the 200 kA interrupt rating. The DIN 1 format body requires a compatible DIN 43620 fuse holder — consult Shansen Enterprises for matched holder and busbar accessories to complete the assembly.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — sourcing directly from the principal for 100% product authenticity
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty and traceability
- Pan-India delivery to all major industrial cities and tier-2 locations
- WhatsApp technical support for fuse selection, holder compatibility, and application guidance
- Competitive bulk pricing for OEMs, panel builders, EPC contractors, and industrial maintenance teams
Compatible Products & Accessories
- DIN 43620 DIN 1 format fuse holders compatible with 170M Series square body fuses
- Eaton Bussmann 170M Series fuses in other amperage ratings (32 A to 1250 A range)
- Microswitch indicator accessories for Type D dual indicator remote alarm wiring
- Busbar adapters and mounting rails for DIN 1 format square body fuse assemblies
- Eaton Bussmann 170H Series high speed fuses for alternative form factor requirements
- Semiconductor protection fuse holders with integrated isolation capability
Frequently Asked Questions
What is the difference between a Class aR fuse and a Class gG fuse for semiconductor protection?
A Class aR fuse like the 170M3811D is a current-limiting, high speed fuse designed exclusively for semiconductor protection. It clears fault currents extremely quickly — within microseconds — to keep the let-through I²t energy below the damage threshold of diodes, thyristors, and IGBTs. A Class gG fuse is a general-purpose fuse intended for cable and equipment protection; its clearing time is far too slow to protect semiconductor junctions, which can be destroyed in milliseconds. For any application involving VFDs, rectifiers, or power converters, always select a Class aR rated fuse.
What does the Dual Indicator (Type D) on the 170M3811D mean?
The Dual Indicator (Type D) means the fuse is equipped with two types of fault indication simultaneously. The first is a visual striker or flag indicator that provides a clear physical sign when the fuse has operated, allowing maintenance personnel to identify a blown fuse quickly during panel inspection. The second is a microswitch output that triggers an electrical signal, enabling remote monitoring, panel alarms, or SCADA integration. This combination minimizes downtime by allowing both local and remote detection of a fuse operation event.
Is the 170M3811D suitable for use on 415 V three-phase systems in India?
Yes. The 170M3811D is rated at 690 V AC, which means it is fully suitable for use on 415 V (400 V nominal) three-phase systems that are standard across Indian industrial installations. A fuse rated for a higher voltage can always be applied at a lower system voltage. If your drive or converter system operates on a 690 V supply, this fuse is equally appropriate for direct application at that voltage level as well.
What fuse holder is compatible with the Eaton Bussmann 170M3811D?
The 170M3811D uses the DIN 43620 DIN 1 format square body with knife blade contacts, so it requires a fuse holder or fuse base designed to accept DIN 1 format high speed square body fuses. Eaton Bussmann offers a range of compatible holders and busbar mounting systems for the 170M Series. Contact Shansen Enterprises with your panel layout and current rating requirements and we can recommend and supply the correct matched holder to complete your assembly.
What industries in India commonly use the Eaton Bussmann 170M Series semiconductor fuses?
The 170M Series is widely used across Indian industries wherever power electronic drives and converters are deployed. Common sectors include textile machinery manufacturing in Coimbatore and Surat, steel and rolling mills in Raipur and Jamshedpur, automotive assembly plants in Pune and Chennai, cement plants in Rajasthan and Andhra Pradesh, and process industries such as petrochemicals and pharmaceuticals. Any application using VFDs, soft starters, DC drives, UPS systems, or thyristor-controlled equipment is a candidate for 170M Series semiconductor fuse protection.
How do I order the Eaton Bussmann 170M3811D from Shansen Enterprises?
Ordering is straightforward. You can reach Shansen Enterprises via WhatsApp or email with the catalog number 170M3811D and your required quantity. Our team will confirm availability, provide a competitive price quote, and arrange pan-India delivery to your location. For bulk orders or ongoing project requirements, ask about our volume pricing for OEMs and panel builders. Visit shansenenterprises.com or use the WhatsApp and email buttons on this page to get in touch with us directly.
