Description
Overview
The Eaton Bussmann 20HO7-660 is a bolted-type BS88 low voltage fuse link from the Bussmann HO7 series, offering a 20A current rating and 660/690V AC voltage rating for robust circuit protection in industrial and commercial electrical systems. Compliant with BS88 Part 2 and IEC 60269-2, it is CE marked and RoHS compliant, making it suitable for deployment in modern switchgear and panel-building projects across India. Its 80kA breaking capacity provides a high level of short-circuit protection, critical for safeguarding downstream equipment in high-fault-level installations.
Key Features
- High Breaking Capacity — 80kA interrupting rating provides effective short-circuit protection in high-fault environments such as industrial switchboards and MCCs.
- Class gG Full-Range Protection — Protects cables and conductors from both overload and short-circuit currents, suitable for general-purpose applications.
- 660/690V AC Rated — Compatible with standard three-phase 415V and higher voltage distribution systems widely used in Indian industry.
- Bolted Tag-Type Construction — Closed-slot tag design ensures secure, low-resistance contact and easy installation in BS88 fuse carriers.
- BS Size A2 Form Factor — Standardized size for straightforward replacement and compatibility with a wide range of BS88 fuse bases and holders.
- IEC 60269-2 / BS88 Part 2 Compliant — Meets internationally recognised standards, ensuring predictable performance and regulatory compliance.
- CE Marked and RoHS Compliant — Suitable for use in CE-marked panel assemblies and meets RoHS requirements for hazardous substance restrictions.
- IEC Rated Certification — Independently certified to IEC standards, giving panel builders and end-users confidence in performance consistency.
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 20HO7-660 |
| Series | Bussmann HO7 |
| Product Type | BS88 Low Voltage Fuse Link |
| Connection Type | Bolted Type |
| Tag Type | Closed Slot |
| BS Size | A2 |
| Amperage Rating | 20 A |
| Rated Voltage (AC) | 660/690 V AC |
| Breaking Capacity | 80 kA |
| Fuse Class | Class gG |
| Standard | BS88 Part 2, IEC 60269-2 |
| Compliances | CE Marked, RoHS Compliant |
| Certifications | IEC Rated |
| Application | General purpose circuit protection — low voltage switchgear panels, motor control centres, distribution boards |
Applications & Selection Guide
The 20HO7-660 is the right choice for engineers specifying general-purpose overload and short-circuit protection in low voltage distribution systems. Its Class gG rating makes it ideal for protecting cables, busbars, and fixed loads in switchgear panels, motor control centres (MCCs), and distribution boards operating up to 660/690V AC. The 80kA breaking capacity ensures it can safely interrupt very high fault currents at the point of installation, making it suitable for main incomer and feeder protection duties where fault levels are elevated.
In Indian industrial environments — including automotive manufacturing plants, textile mills, food processing facilities, pharmaceuticals, and infrastructure projects across Tamil Nadu, Maharashtra, Gujarat, and beyond — the BS88 Class gG fuse link remains the workhorse of LV panel protection. The closed-slot bolted tag design is compatible with standard BS88-type fuse carriers and bases commonly stocked by panel builders throughout India.
When selecting this fuse, verify the available fault level at the installation point does not exceed 80kA, confirm the fuse base is rated for BS Size A2, and ensure downstream cable sizing is coordinated with the 20A rating. For applications requiring motor-specific protection with high inrush tolerance, consider Class gM or aM alternatives. For general feeder and cable protection, the gG class of this fuse link is the appropriate and most widely used selection.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — supplying genuine Eaton Bussmann products across Tamil Nadu and pan-India
- 100% genuine products with manufacturer warranty — no counterfeits, no compromise
- Pan-India delivery to all major industrial cities and tier-2 locations
- WhatsApp technical support for product selection, cross-referencing, and application queries
- Bulk and project pricing available for panel builders, OEMs, contractors, and EPCs
Compatible Products & Accessories
- BS88 A2 Fuse Carriers and Bases (compatible with 20HO7-660 closed-slot bolted tag)
- Eaton Bussmann BS88 HO7 Series Fuse Links — other ampere ratings in the same A2 size range
- Low Voltage Fuse Switch Disconnectors (BS88 compatible) for use with this fuse link
- Eaton Bussmann Fuse Holders and DIN Rail Fuse Bases suitable for BS88 fuses
- Fuse Pulling Tools for safe removal of bolted-type fuse links under de-energised conditions
- Spare Fuse Kits — keep HO7 series fuses on-site for rapid panel maintenance and minimal downtime
Frequently Asked Questions
What does Class gG mean for the Eaton Bussmann 20HO7-660 fuse link?
Class gG denotes a general-purpose, full-range fuse capable of clearing currents from the minimum fusing current (overload range) up to the maximum breaking capacity (short-circuit range). The 20HO7-660 will interrupt any fault current from just above its rated 20A overload threshold all the way up to 80kA, making it suitable for protecting cables, conductors, and distribution equipment in low voltage systems without requiring a separate overload device in many applications.
Is the 20HO7-660 suitable for motor protection applications in India?
The 20HO7-660 carries a Class gG rating, which provides full-range protection but does not have the extended time-delay characteristic of Class gM or aM fuses. For direct-on-line motor starters where high inrush currents are present, a Class aM (motor-rated) fuse is generally preferred to avoid nuisance blowing during motor starting. However, for motors with soft starters or variable frequency drives where inrush is controlled, the gG class fuse may be acceptable. Always consult the motor and starter manufacturer’s recommendations and relevant IS/IEC standards when making this selection.
What fuse carrier or base is compatible with the 20HO7-660?
The 20HO7-660 is a BS Size A2, closed-slot, bolted-tag fuse link. It requires a BS88-compatible fuse carrier or fuse base designed for the A2 size with a bolted tag mounting arrangement. When sourcing replacement fuse carriers or building new panels around this fuse, confirm the base is rated for at least 660V AC and 80kA breaking capacity to match the fuse’s capability. Contact Shansen Enterprises for guidance on compatible Eaton fuse carriers and accessories available in India.
What is the breaking capacity of the 20HO7-660 and why does it matter?
The 20HO7-660 has a breaking capacity of 80kA. This is the maximum prospective fault current the fuse can safely interrupt without failure, arcing beyond the fuse body, or damage to surrounding equipment. In installations close to transformers or large busbars — where available fault levels can be very high — it is essential to specify a fuse whose breaking capacity meets or exceeds the prospective short-circuit current at that point. At 80kA, this fuse link is suitable for use in most low voltage industrial distribution boards and switchgear panels in India.
What standards and certifications does the 20HO7-660 comply with?
The Eaton Bussmann 20HO7-660 complies with BS88 Part 2 and IEC 60269-2, which are the primary international standards governing low voltage fuse links used in general-purpose electrical installations. It is CE marked, confirming conformity with applicable European directives, and is RoHS compliant, meaning it is free from restricted hazardous substances. The product is also IEC Rated, indicating independent certification to IEC performance requirements. These certifications make it acceptable for use in CE-marked panel assemblies and for projects requiring documented regulatory compliance in India and export markets.
How do I order the Eaton Bussmann 20HO7-660 from Shansen Enterprises?
Ordering the Eaton Bussmann 20HO7-660 from Shansen Enterprises is straightforward. You can reach us via WhatsApp or email using the contact buttons on this page — quote the catalog number 20HO7-660 along with the quantity required and your delivery location anywhere in India. Our team will confirm availability, provide a competitive price, and arrange dispatch. For project or bulk requirements, we offer special pricing for panel builders, OEMs, and EPC contractors. Shansen Enterprises is an authorized Eaton channel partner based in Coimbatore, Tamil Nadu, ensuring you receive 100% genuine Eaton Bussmann products with full manufacturer warranty.
