Description
Overview
The Eaton Bussmann 110EET is a 110 A high speed semiconductor protection fuse from the Bussmann EET Series, rated at 690 V AC and 450 V DC with a 200 kA breaking capacity. Built to BS88 Part 4 and IEC 60269-4 standards, this single barrel fuse link with a top indicator delivers the ultra-fast fault current interruption that semiconductor devices such as thyristors, IGBTs, diodes, and SCRs require to survive overcurrent events. It is widely used across India in industrial power electronics, motor drive panels, and renewable energy converter systems.
Key Features
- High Speed aR Class — ultra-fast current-limiting action protects semiconductor devices that cannot tolerate slow fault clearance
- 200 kA Breaking Capacity — handles extremely high prospective fault currents found in industrial power systems
- 690 V AC / 450 V DC Dual Rating — suitable for both AC and DC semiconductor protection applications including DC common bus systems
- Single Barrel with Top Indicator — compact single barrel form factor with a clearly visible top-mounted blown fuse indicator for fast maintenance response
- BS88 Part 4 / IEC 60269-4 Compliant — meets internationally recognised standards ensuring compatibility with switchgear and fusegear across global markets
- CE Marked and RoHS Compliant — safe for use in European and environmentally regulated applications
- IEC Rated and UL Recognized — dual certification supporting both IEC and UL panel documentation requirements
- Bussmann EET Series Reliability — engineered specifically for semiconductor protection duty cycles in high-cycling industrial environments
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 110EET |
| Series | Bussmann EET |
| Amperage Rating | 110 A |
| Rated Voltage AC | 690 V |
| Rated Voltage DC | 450 V |
| Breaking Capacity | 200 kA |
| Fuse Class | Class aR |
| Fuse Type | High Speed British Standard |
| Body Style | Single Barrel |
| Fuse Indicator | Top Indicator |
| Standard | BS88 Part 4, IEC 60269-4 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated, UL Recognized |
| Application | Semiconductor protection, DC drives, VFDs, power converters, rectifiers, soft starters, thyristor stacks, DC common bus |
Applications & Selection Guide
The 110EET is the right choice when protecting semiconductor devices rated at or below 110 A in systems running up to 690 V AC or 450 V DC. Class aR fuses are specifically designed for semiconductor protection duty — they are not interchangeable with general-purpose gG fuses. The aR class provides the rapid I²t current limiting needed to prevent junction damage in thyristors, diodes, IGBTs, and SCR modules before thermal runaway occurs, making them essential in VFD input/output stages, soft starter bypass circuits, rectifier bridges, and DC common bus architectures.
In Indian industrial environments — including Coimbatore’s textile machinery sector, Chennai’s automotive manufacturing plants, Pune’s engineering industries, and Hyderabad’s pharmaceutical processing facilities — high-speed semiconductor fuses are a critical component in maintaining uptime of expensive drive systems. The 110EET’s 200 kA breaking capacity ensures reliable operation even on low-impedance industrial bus systems where prospective fault currents are high. Its dual AC/DC voltage rating makes it especially versatile for modern mixed AC/DC power converter topologies.
When selecting semiconductor fuses, always verify the I²t let-through value against the semiconductor device’s rated I²t withstand. For replacement or new panel build requirements in India, Shansen Enterprises can provide technical guidance on fuse coordination and compatible fuse holders for the 110EET.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore with verified supply chain traceability
- 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 fuse selection, coordination, and replacement queries
- Competitive bulk pricing for panel builders, OEMs, and EPC contractors across India
Compatible Products & Accessories
- Eaton Bussmann EET Series fuse holders and fuse bases compatible with single barrel BS88 Type fuses
- Eaton Bussmann EET Series fuses in adjacent current ratings (80 A, 100 A, 125 A, 160 A) for panel coordination
- Eaton Bussmann semiconductor protection fuses for 3-phase VFD and rectifier bridge sets (matched sets of 3 or 6)
- Indicator microswitches and remote blown-fuse signalling accessories for panel alarm integration
- DIN rail and busbar-mounted fuse carriers for BS88 single barrel high speed fuses
Frequently Asked Questions
What is the difference between a Class aR fuse and a Class gG fuse for semiconductor protection?
Class gG fuses are general-purpose fuses designed to carry full load current and interrupt overloads to short-circuit currents, but their relatively slow operation means they cannot protect semiconductors from damage during fast fault events. Class aR fuses like the 110EET are specifically rated for semiconductor protection — they are designed only for the upper short-circuit current range and provide the extremely rapid current limiting and low I²t let-through that prevents junction damage in thyristors, diodes, IGBTs, and SCR modules. Always use Class aR fuses where semiconductor device manufacturers specify semiconductor protection fuses.
Can the 110EET be used for DC drive and common bus applications?
Yes. The Eaton Bussmann 110EET carries a DC voltage rating of 450 V, making it suitable for DC drive input protection, DC common bus systems, and other DC power electronics applications up to 450 V DC. Its 690 V AC rating simultaneously supports AC-side protection in VFD input stages, soft starter circuits, and rectifier front ends. Always confirm that the system DC bus voltage does not exceed 450 V when applying the 110EET in a DC circuit.
What does the top indicator on the 110EET do?
The top-mounted fuse indicator on the 110EET provides a visual signal when the fuse has operated. When a fault occurs and the fuse element clears, the indicator pops up or changes state, giving maintenance personnel an immediate visual confirmation of which fuse has blown without needing to remove or test individual fuses. This significantly reduces panel downtime and simplifies fault diagnosis in multi-fuse semiconductor protection assemblies. Some compatible fuse holders also allow the indicator to trigger a microswitch for remote alarm signalling in SCADA or PLC-based monitoring systems.
What standards does the 110EET comply with and are they accepted in India?
The 110EET is manufactured to BS88 Part 4 and IEC 60269-4 — the internationally recognised standards for high-speed semiconductor protection fuses. IEC 60269-4 is accepted by major Indian panel certification bodies, and the fuse also carries CE Marking, RoHS compliance, IEC Rating, and UL Recognition. These certifications make the 110EET suitable for panels destined for export as well as domestic Indian industrial installations where IEC-compliant components are specified by consultants and EPCs.
How do I select the right current rating when replacing a semiconductor fuse in a VFD or rectifier?
When replacing a semiconductor fuse, match the catalog number exactly where possible — do not substitute a higher current rating assuming it provides equivalent protection. The fuse must be selected based on the semiconductor device’s rated current, the circuit’s continuous RMS current, and critically, the semiconductor’s maximum I²t withstand value, which must be greater than the fuse’s I²t let-through at the system’s prospective fault current. If you are unsure of the correct rating for your application, contact Shansen Enterprises on WhatsApp and our technical team will assist with fuse coordination and selection using Eaton Bussmann selection tools.
How do I order the Eaton Bussmann 110EET from Shansen Enterprises?
Ordering the Eaton Bussmann 110EET from Shansen Enterprises is straightforward. You can send your requirement via WhatsApp or email quoting the catalog number 110EET along with the quantity required. Our team will respond with availability, lead time, and a competitive price. We supply genuine Eaton Bussmann products with full traceability and deliver pan-India to all major industrial locations. Visit shansenenterprises.com or use the WhatsApp and email buttons on this product page to get a fast quote.
