Description
Overview
The Eaton Bussmann 4HO7-660 is a bolted-type BS88 low voltage fuse link from the Bussmann HO7 series, carrying a 4A current rating at 660/690V AC with a robust 80 kA breaking capacity. Classified as Class gG under BS88 Part 2 and IEC 60269-2, it provides reliable general-purpose overcurrent protection for low voltage switchgear panels, motor control centres, and distribution boards. Its closed slot tag configuration and A2 BS size ensure compatibility with standard BS88 bolted fuse carriers widely used across Indian industrial electrical installations.
Key Features
- BS88 Part 2 / IEC 60269-2 Compliance — meets internationally recognised standards for low voltage fuse links, ensuring predictable protection performance
- Class gG Rating — full-range general-purpose fuse class providing protection against both overloads and short-circuit currents
- 80 kA Breaking Capacity — safely interrupts very high fault currents, protecting downstream equipment in demanding industrial circuits
- 660/690V AC Voltage Rating — suitable for standard 415V and higher voltage distribution systems prevalent in Indian industrial facilities
- 4A Amperage Rating — precisely calibrated for protection of low-current control circuits, instrumentation, and auxiliary equipment
- Bolted Type Construction — secure, vibration-resistant termination ideal for panel board and switchgear applications with high reliability demands
- Closed Slot Tag Design — enhances mechanical retention in the fuse carrier, reducing the risk of accidental displacement
- BS Size A2 — standardised form factor for straightforward replacement and interchangeability in existing BS88 fuse bases
- CE Marked and RoHS Compliant — meets European directives for safety and restriction of hazardous substances, supporting export-oriented panel builders
- IEC Rated Certification — independently verified performance for use in IEC-based electrical installations across India and globally
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 4HO7-660 |
| Series | Bussmann HO7 |
| Product Type | BS88 Low Voltage Fuse Link |
| Mounting / Connection Type | Bolted Type |
| BS Size | A2 |
| Tag Type | Closed Slot |
| Rated Voltage | 660/690 V AC |
| Amperage Rating | 4 A |
| 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 |
| Manufacturer | Eaton (Bussmann) |
Applications & Selection Guide
The Eaton Bussmann 4HO7-660 is designed for general-purpose overcurrent protection in low voltage electrical installations operating at up to 660/690V AC. Its 4A rating makes it particularly well suited for protecting control circuits, instrumentation loops, auxiliary power supplies, and small loads within switchgear panels and motor control centres where precise low-current protection is required without nuisance tripping.
As a Class gG fuse, the 4HO7-660 provides full-range protection — it responds to prolonged overloads as well as high-magnitude short-circuit faults up to 80 kA, making it appropriate for both cable and equipment protection in IEC-compliant installations. Panel builders and design engineers should select Class gG fuses where protection of general wiring and distribution circuits is needed, as opposed to Class aM fuses which are intended solely for motor starting applications.
Across India, the 4HO7-660 finds wide use in manufacturing plants, automotive facilities, textile mills in Coimbatore and Tamil Nadu, pharmaceutical production units, infrastructure projects, and commercial building electrical panels. Its compliance with BS88 Part 2 and IEC 60269-2 makes it a preferred choice for engineering procurement contractors and OEM panel builders supplying both domestic and export markets.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner in Coimbatore — sourcing directly from the official supply chain
- 100% genuine Eaton Bussmann products supplied with manufacturer warranty
- Pan-India delivery to all major cities and industrial hubs
- WhatsApp technical support for product selection, cross-referencing, and application queries
- Bulk pricing and priority fulfilment for panel builders, contractors, and EPCs
Compatible Products & Accessories
- BS88 A2 Bolted Fuse Carrier / Fuse Base — compatible with 4HO7-660 closed slot tag configuration
- Eaton Bussmann HO7 Series higher amperage fuse links — for coordinated protection in the same distribution panel
- BS88 Fuse Holders and DIN rail fuse disconnectors — for modular panel construction
- Eaton Busbar systems and distribution blocks — for complete low voltage panel assemblies
- Eaton motor protection circuit breakers (PKZ / PKZM series) — for upstream or downstream coordination
Frequently Asked Questions
What does the Class gG rating mean for the Eaton Bussmann 4HO7-660?
Class gG denotes a general-purpose, full-range fuse that protects against both overload currents and short-circuit currents across its entire operating range. Unlike Class aM fuses which only protect against short circuits (intended for use with motor starters), a Class gG fuse such as the 4HO7-660 will also respond to sustained overloads, making it suitable for protecting cables, distribution circuits, and general electrical equipment in low voltage installations.
What is the breaking capacity of the 4HO7-660 and why does it matter?
The 4HO7-660 has a breaking capacity of 80 kA. This is the maximum prospective fault current the fuse can safely interrupt without rupturing or causing a hazard. In industrial installations connected to large transformer capacities, prospective short-circuit currents can be very high; selecting a fuse with adequate breaking capacity ensures safe fault clearance and protection of downstream equipment and personnel.
Is the 4HO7-660 suitable for use in Indian 415V three-phase distribution systems?
Yes. The 4HO7-660 is rated at 660/690V AC, which comfortably encompasses the 415V (line-to-line) three-phase systems standard across India as well as higher voltage industrial distribution networks up to 690V. Its IEC 60269-2 and BS88 Part 2 compliance aligns with the IEC-based electrical standards followed by Indian panel builders, consultants, and electrical contractors.
What is the BS Size A2 designation for this fuse link?
BS Size A2 refers to the standardised physical dimensions and form factor defined under the BS88 fuse system. The size designation determines which fuse carrier or fuse base the link is compatible with. Using the correct BS size ensures proper mechanical fit and reliable electrical contact. The A2 size is a commonly stocked size in Indian panel boards and switchgear using the BS88 bolted fuse system.
What is the difference between a bolted type fuse link and a tag type fuse link?
A bolted type fuse link uses flat tags that are clamped and bolted directly into the fuse carrier contacts, providing a very secure and low-resistance connection suitable for high-reliability industrial applications. The closed slot tag on the 4HO7-660 further ensures the tag is firmly retained within the carrier slot, reducing any risk of accidental loosening due to vibration or thermal cycling. This is preferred in switchgear panels and motor control centres where connection integrity is critical.
How do I order the Eaton Bussmann 4HO7-660 from Shansen Enterprises?
You can request a quote for the Eaton Bussmann 4HO7-660 directly through Shansen Enterprises by clicking the WhatsApp button on this page or by sending an email enquiry using the contact form. Please mention the catalog number 4HO7-660, required quantity, and your delivery location so our team can provide you with accurate pricing and lead time. Shansen Enterprises serves customers across Coimbatore, Chennai, Bangalore, Mumbai, and all major industrial locations throughout India as an authorized Eaton channel partner.
