Description
Overview
The Eaton Bussmann 160EET is a high-speed, single-barrel BS88-style semiconductor protection fuse from the Bussmann EET Series, combining a 160A current rating with a 200 kA breaking capacity at 690V AC and 450V DC. Conforming to BS88 Part 4 and IEC 60269-4, it is engineered specifically for the protection of thyristors, IGBTs, diodes, and other power semiconductors against short-circuit fault currents. Its top-mounted indicator allows maintenance engineers to rapidly identify a blown fuse without removing it from the fuse holder.
Key Features
- High-Speed Semiconductor Protection — Ultra-fast current limiting action safeguards sensitive power semiconductors that conventional fuses cannot protect.
- 200 kA Breaking Capacity — Handles extreme fault currents in high-power industrial installations without fragmentation or enclosure damage.
- Dual Voltage Rating — Rated 690V AC and 450V DC, making it suitable for both AC-side and DC bus protection in variable speed drive systems.
- Class aR Rating — Back-up semiconductor protection class per IEC 60269-4, optimised for protecting rectifier and thyristor equipment.
- Top-Mounted Fuse Indicator — Provides immediate visual confirmation of fuse operation, reducing fault-finding time on the panel shop floor.
- Single Barrel Body — Compact, standardised form factor compatible with BS88 Part 4 fuse carriers and switch-fuse gear widely used across India.
- CE Marked and RoHS Compliant — Meets European safety and environmental directives; suitable for export-grade machine building.
- IEC Rated and UL Recognised — Dual certification supports both domestic Indian and international project specifications.
- Bussmann EET Series — Backed by Eaton’s global semiconductor fuse engineering heritage, ensuring consistent I²t and current-limiting characteristics.
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 160EET |
| Series | Bussmann EET |
| Fuse Type | High Speed British Standard, Single Barrel |
| Amperage Rating | 160 A |
| Rated Voltage AC | 690 V |
| Rated Voltage DC | 450 V |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Standard | BS88 Part 4, IEC 60269-4 |
| Fuse Indicator | Top Indicator |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL Recognised |
| Application | Semiconductor protection, DC drives, VFDs, power converters, rectifiers, soft starters, thyristor stacks, DC common bus |
Applications & Selection Guide
The 160EET is the correct choice when engineers require fast-acting, current-limiting protection for power semiconductor devices operating at up to 690V AC or 450V DC. It is widely applied on the AC input side or DC bus of variable frequency drives (VFDs), soft starters, rectifier bridges, thyristor power controllers, and IGBT-based power converters where I²t co-ordination with the semiconductor device is critical. The Class aR designation confirms this fuse is intended for back-up protection of semiconductor rectifier equipment and should be selected in conjunction with the semiconductor manufacturer’s maximum permissible I²t rating.
In India, the 160EET sees strong demand in Coimbatore’s textile machinery and machine-tool sectors, as well as in Chennai and Pune automotive manufacturing plants, renewable energy inverter panels, and steel plant drive systems. Panel builders and OEMs specifying Eaton Bussmann fuses for export-compliant panels will benefit from the combined IEC and UL credentials. The 200 kA breaking capacity also makes this fuse suitable for installations close to large transformer secondary busbars where prospective fault levels are high.
When selecting this fuse, confirm the semiconductor device’s maximum I²t, peak let-through current (Ip), and operating voltage before finalising the catalog number. For applications above 160A at 690V in the EET Series, consult Shansen Enterprises for guidance on adjacent ratings. For DC bus voltages exceeding 450V, a higher DC-rated variant should be selected.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner, Coimbatore — guaranteed genuine product with full manufacturer traceability.
- 100% genuine Eaton Bussmann fuses with applicable warranty and documentation.
- Pan-India delivery — we regularly ship to Chennai, Bangalore, Mumbai, Pune, Hyderabad, and beyond.
- WhatsApp technical support for application selection, I²t co-ordination, and fuse holder compatibility queries.
- Bulk pricing and project-rate quotations for panel builders, system integrators, and EPCs.
Compatible Products & Accessories
- Eaton Bussmann BS88 Part 4 Fuse Carriers and Fuse Holders for EET Series
- Eaton Bussmann EET Series — adjacent ratings (e.g., 100EET, 125EET, 200EET) for drive system co-ordination
- Eaton Bussmann DIN-type semiconductor fuses for compact panel applications
- Semiconductor fuse monitoring relay / blown-fuse indicator relay
- Eaton busbar systems and DIN rail mounting accessories
- Surge protective devices (SPDs) for VFD input protection
Frequently Asked Questions
What is the difference between a Class aR fuse and a Class gG fuse for semiconductor protection?
A Class gG fuse is a general-purpose, full-range current-limiting fuse designed to protect cables and general electrical equipment. A Class aR fuse, such as the 160EET, is a partial-range, high-speed semiconductor protection fuse engineered to clear fault currents rapidly enough to protect thyristors, diodes, and IGBTs. Class aR fuses have significantly lower let-through I²t values than Class gG fuses of the same rating, which is essential because power semiconductors can be destroyed in microseconds by excessive I²t energy. Never substitute a Class gG fuse where a Class aR fuse is specified for semiconductor protection.
Can the Eaton Bussmann 160EET be used on the DC bus of a VFD or rectifier?
Yes. The 160EET is rated at 450V DC in addition to its 690V AC rating, making it suitable for DC bus protection in rectifier bridges, VFDs, and thyristor converters where the DC bus voltage does not exceed 450V. For higher DC bus voltages, a fuse with a higher DC voltage rating must be selected. Always confirm the actual DC bus voltage, including any transient overvoltage allowance, before specifying this fuse.
What does the top indicator on the 160EET do and how does it help maintenance teams?
The top-mounted indicator is a mechanical or microswitch-based device that provides a visible signal — typically a pop-up striker or a flag — when the fuse has operated. This allows maintenance engineers to identify a blown fuse visually without removing the fuse from its holder or using a multimeter, significantly reducing panel downtime and diagnostic time. Some indicator types can also be wired to an alarm or control circuit for remote blown-fuse annunciation.
Is the 160EET suitable for use in soft starter and thyristor power controller applications in India?
Yes. The Eaton Bussmann 160EET is specifically suited for protecting the thyristor stacks and power modules in soft starters and thyristor power controllers (TPCs) used extensively in Indian industries such as textile, cement, pumping, and metal processing. Its Class aR rating and 200 kA breaking capacity ensure reliable semiconductor protection even on high fault-level distribution systems commonly found in Indian industrial estates and TNEB-supplied feeders.
What fuse holder or fuse carrier is compatible with the Eaton Bussmann 160EET?
The 160EET uses a BS88 Part 4 single-barrel body form factor. It requires a compatible Eaton Bussmann BS88 Part 4 fuse carrier or switch-fuse base rated for the EET Series at 160A and 690V AC. Always verify the fuse carrier catalog number with Eaton’s dimensional and rating documentation or contact Shansen Enterprises for a matched fuse holder recommendation to ensure correct mechanical fit, contact pressure, and electrical rating.
How do I order the Eaton Bussmann 160EET from Shansen Enterprises?
Ordering the Eaton Bussmann 160EET from Shansen Enterprises is straightforward. You can reach us via WhatsApp or email using the contact buttons on this page — simply mention the catalog number 160EET and your required quantity. Our team will respond with availability, lead time, and a competitive quotation. We supply to panel builders, OEMs, EPCs, and maintenance teams across Coimbatore and all major cities in India including Chennai, Bangalore, Mumbai, Pune, and Hyderabad. Bulk and project orders are welcome.
