Overview
The GEC Alsthom TIA20 fuse is a British Standard low-voltage industrial fuse designed for general-purpose circuit protection. This Type gG Red Spot fuse delivers robust protection in DC and AC applications, with a current rating of 20A and a high breaking capacity. Supplied as a lot of 5 units, the TIA20 is ideal for replacement and spare inventory in industrial control systems and equipment.
Key Features
- 20A current rating with dual-voltage capability (460V DC / 660V AC)
- 80kA breaking capacity at 660V AC; 40kA at 460V DC for reliable fault protection
- Type gG characteristic for general-purpose industrial applications
- Red Spot indicator for easy visual identification and status verification
- Compact cartridge design (22 × 86 mm) fits standard British Standard holders
- Manufactured in England; complies with BS88-2, IEC 60269-2, and ASTA 20
Technical Specifications
- Part Number: TIA20
- Current Rating: 20A
- AC Voltage Rating: 660V
- DC Voltage Rating: 460V
- Type: gL / gG (General Purpose)
- Breaking Capacity (AC): 80 kA @ 660V
- Breaking Capacity (DC): 40 kA @ 460V
- Dimensions: 22 × 86 mm cartridge
- Physical Dimensions (OD × L): 0.85″ × 3.35″
- Weight: 60 grams per unit
- Standards Compliance: BS88-2, IEC 60269-2-1, ASTA 20
- Quantity per Lot: 5 units
- Origin: United Kingdom
Typical Applications
The GEC Alsthom TIA20 is suitable for general industrial motor circuits, distribution boards, control panels, and low-voltage electrical systems. Its Type gG rating handles both steady-state overloads and transient fault currents, making it ideal for machinery protection, transformer circuits, and DC power supply applications. Common installations include industrial automation equipment, switchgear, and plant electrical infrastructure.
Compatibility & Replacements
Compatible With
- British Standard BS88/A2 fuse holders and clips
- Industrial electrical distribution boards rated for 660V AC / 460V DC
- Low-voltage motor control centers and starter panels
- DC power systems and backup power supplies
- Standard offset bolted tag fuse mounting hardware
Replaces / Drop-In Replacement For
- Legacy GEC Alsthom TIA20 fuses in existing installations
- Lawson TIA20 (same part number, equivalent design)
- Eaton Bussmann TIA20 (modern equivalent manufactured by Eaton)
Works With
- BS88 Part 2 compliant fuse holders (CM32F, RS32 optional accessories)
- IEC 60269-2 rated electrical systems
- Industrial AC and DC switchgear rated for 660V AC and 460V DC respectively
- General industrial control and motor protection circuits
