Description
Overview
The Eaton Bussmann 40KO7-660 is a bolted-type BS88 Low Voltage Fuse Link from the Bussmann KO7 series, designed for dependable general-purpose circuit protection in low-voltage electrical systems. Rated 40 A at 660/690 V AC with an 80 kA breaking capacity, it complies with BS88 Part 2 and IEC 60269-2, making it suitable for installation in switchgear panels, motor control centres, and distribution boards across industrial and commercial facilities. Its Class gG rating ensures full-range overcurrent protection covering both overloads and short-circuit faults.
Key Features
- 40 A Current Rating — Precise overcurrent protection for cables, busbars, and equipment rated at 40 amperes
- 660/690 V AC Voltage Rating — Suitable for standard three-phase LV distribution systems common in Indian industrial plants
- 80 kA Breaking Capacity — High fault current interruption capability protects downstream equipment even under severe short-circuit conditions
- Class gG Fuse — Full-range protection; clears both overload and short-circuit currents without requiring backup protection
- BS88 Part 2 / IEC 60269-2 Compliance — Internationally recognised standard ensures interchangeability and consistent performance
- Bolted Type Construction — Secure, vibration-resistant connection suitable for demanding industrial environments
- A3 BS Size with Closed-Slot Tag — Standardised form factor for compatibility with existing BS88 fuse carriers and bases
- CE Marked and RoHS Compliant — Meets European safety directives and restricts hazardous substances for export and domestic compliance
- IEC Rated Certification — Third-party verified performance under IEC testing protocols
Technical Specifications
| Specification | Value |
|---|---|
| Catalog Number | 40KO7-660 |
| Series | Bussmann KO7 |
| Product Type | BS88 Low Voltage Fuse Link |
| Connection Type | Bolted Type |
| BS Size | A3 |
| Tag Type | Closed Slot |
| Amperage Rating | 40 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 40KO7-660 is engineered for general-purpose overcurrent protection in low-voltage power distribution systems operating at up to 660/690 V AC. It is ideally suited for feeder protection in main distribution boards, sub-distribution panels, motor control centres (MCCs), and low-voltage switchgear assemblies across manufacturing plants, process industries, commercial complexes, and infrastructure projects throughout India.
The Class gG designation means this fuse provides full-range protection — it can safely interrupt currents ranging from small sustained overloads to maximum prospective short-circuit currents up to 80 kA. This makes it an excellent choice where a single protection device must handle both thermal overload and fault current scenarios without requiring an upstream backup fuse. Panel builders and electrical contractors in Coimbatore and across Tamil Nadu regularly specify BS88 gG fuses for compliance with IEC 60269-2 in industrial installations.
Industries in India that commonly use this fuse link include textile machinery, automotive component manufacturing, food processing, pharmaceuticals, cement plants, steel rolling mills, and commercial HVAC systems. When selecting the 40KO7-660, verify that the installed fuse base or carrier is rated for A3 BS size and the closed-slot tag format to ensure safe and correct fitment.
Why Buy from Shansen Enterprises?
- Authorized Eaton Channel Partner, Coimbatore — Source directly from an authorised partner for guaranteed authenticity
- 100% Genuine Products with Warranty — Every Eaton Bussmann fuse comes with full manufacturer backing
- Pan-India Delivery — We ship to all major cities and industrial zones across India promptly
- WhatsApp Technical Support — Get quick spec clarification, cross-reference help, and selection guidance on WhatsApp
- Bulk Pricing for Panel Builders and Contractors — Competitive pricing on volume orders for OEMs, EPC contractors, and panel fabricators
Compatible Products & Accessories
- BS88 A3 Fuse Carriers and Fuse Bases (matching closed-slot tag format)
- Eaton Bussmann BS88 Fuse Holders for bolted-type fuse links
- Other Bussmann KO7 series fuse links (various current ratings: 16 A, 20 A, 25 A, 32 A, 50 A, 63 A)
- Low Voltage Switchgear and Distribution Boards compatible with BS88 Part 2 fuses
- Eaton Motor Control Centre components and MCC panels
- Fuse puller tools rated for BS88 A3 size fuses
Frequently Asked Questions
What does the Class gG rating mean for the Eaton Bussmann 40KO7-660?
Class gG stands for general-purpose, full-range fuse. The lowercase ‘g’ indicates the fuse can interrupt all overcurrents from the minimum fusing current up to the rated breaking capacity — in this case 80 kA. The uppercase ‘G’ denotes general-purpose application. This means the 40KO7-660 protects against both prolonged overload currents and high fault short-circuit currents without needing a backup fuse upstream, simplifying protection coordination in distribution boards and MCCs.
What is the difference between 660 V and 690 V ratings on this fuse link?
The 660/690 V dual voltage rating reflects historical and current IEC standard voltages for low-voltage AC systems. Older IEC and BS standards referenced 660 V, while the current IEC 60038 standard defines 690 V as the nominal system voltage for certain industrial networks. The 40KO7-660 is tested and rated for both, making it suitable for existing 660 V installations and modern 690 V systems without any derating. Most standard three-phase 415 V systems in India operate well within this rating.
Which fuse base or carrier is compatible with the 40KO7-660?
The 40KO7-660 uses BS Size A3 with a closed-slot tag type. You need a BS88 Part 2 fuse carrier or fuse base that accepts the A3 size and closed-slot tag configuration. Confirm the fuse base voltage and current ratings meet or exceed 660/690 V AC and 40 A respectively. Eaton Bussmann offers compatible fuse carriers within their BS88 range. Please contact Shansen Enterprises in Coimbatore and our technical team will confirm the correct carrier part number for your panel design.
Is the Eaton Bussmann 40KO7-660 suitable for motor protection applications in India?
The 40KO7-660 is classified as Class gG, which is a general-purpose fuse primarily designed for cable and circuit protection in distribution systems. For direct motor protection against locked-rotor and starting surge currents, Class gM or aM (motor-rated) fuses are typically recommended, as gG fuses may operate during motor starting inrush if not properly coordinated. However, gG fuses are widely used in motor control centres in India for feeder circuit protection upstream of motor starters. Consult Shansen Enterprises for proper motor circuit coordination advice.
Does this fuse comply with Indian electrical standards and IS specifications?
The 40KO7-660 complies with BS88 Part 2 and IEC 60269-2, which are internationally recognised standards accepted by Indian electrical authorities and commonly referenced in Indian industrial electrical engineering practice. While the primary standard is IEC-based rather than a BIS IS standard, IEC 60269 fuses are widely used and accepted in industrial installations, EPC projects, and export-oriented manufacturing facilities across India. The fuse is CE marked and RoHS compliant, further confirming its adherence to rigorous international safety requirements.
How do I order the Eaton Bussmann 40KO7-660 from Shansen Enterprises?
Ordering the Eaton Bussmann 40KO7-660 from Shansen Enterprises is straightforward. You can click the WhatsApp button on this page to send us a direct message with the catalog number and required quantity, or use the email enquiry form to request a formal quotation. Our team in Coimbatore will respond promptly with pricing, availability, and estimated delivery timelines for your location anywhere in India. For bulk orders, panel builder accounts, or repeat procurement schedules, please mention your requirements so we can offer the best pricing and priority dispatch.
