Overview
The Mersen 9F60BHH001 is a current-limiting potential transformer fuse rated 1A at 15.5kV (15,500 VAC). This ferrule-mount fuse is designed for the primary winding protection of medium-voltage potential transformers in industrial and utility applications. The Amp-Trap® design provides reliable overcurrent protection with a high interrupting rating of 120 kA, making it suitable for demanding electrical environments.
Key Features
- Current-Limiting Protection: Reduces let-through energy and limits fault currents for superior equipment protection
- High Interrupting Rating: 120 kA capacity handles high-magnitude faults without degradation
- Ferrule Mounting: Standard clip mounting provides quick, tool-free installation in compatible holders
- Visual Blown-Fuse Indicator: Metal-embossed catalog number and indicator for positive identification of blown fuses
- Compact Design: Small ferrule form factor (1.562″ diameter × 12.875″ length) saves mounting space
- Fiberglass Melamine Body: Provides dimensional stability in harsh industrial environments
Technical Specifications
The Mersen 9F60BHH001 combines precise electrical characteristics with robust construction:
- Rated Current: 1 Ampere
- Voltage Rating: 15.5 kV (15,500 VAC)
- Fuse Type: Potential Transformer (PT) Fuse
- Class/Type: EJ1
- Interrupt Rating: 120 kA
- Mounting Style: Ferrule / Clip Mount
- Body Material: Fiberglass melamine (epoxy-sealed)
- Terminal Type: Ferrule
- Series: BHH (Amp-Trap®)
- Dimensions: 1.562″ diameter × 12.875″ length
- Industry Standards: IEC compliant, medium-voltage transformer fuse protection
Typical Applications
The Mersen 9F60BHH001 is engineered specifically for:
- Primary winding protection of medium-voltage potential transformers (voltage transformers)
- Utility and industrial transformer circuits operating at 15.5 kV
- Metering and protection circuits in substations and switchgear
- High-reliability overcurrent protection where current-limiting performance is critical
- Equipment requiring ferrule-mount, quick-change fuse cartridges
Compatibility & Replacements
Compatible With
- Standard ferrule fuse holders and clips (PT fuse clips, medium-voltage switchgear)
- Medium-voltage potential transformer protection circuits
- Mersen Amp-Trap® fuse receptacles and holders
- Industrial and utility substation protection systems
Replaces / Drop-In Replacement For
- Ferraz Shawmut PT fuses (same EJ1 class and ferrule form factor)
- Equivalent 1A 15.5kV potential transformer fuses from other Mersen product lines
- Legacy Gould PT fuse cartridges (where form/fit applies)
Works With
- Medium-voltage switchgear and transformer protection relay schemes
- IEC 60269-compliant fuse systems
- Utility metering and protection circuits
- Standard ferrule-style fuse clips and bayonet holders
