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MERSEN FUSE H 3609P BCKUP T VDE537-88/50 A1000293
Mersen A1000293 Limitor-PTD DIN high-voltage transformer back-up fuse rated at 36 kV AC and 50 A with controlled power dissipation and an 80 N thermal striker.
£144.99
Why Choose the Mersen A1000293 High-Voltage Transformer Fuse?
The Mersen A1000293, catalogue number 45DB360V50PTD, is a premium DIN high-voltage back-up fuse designed for the protection of distribution transformers in medium and high-voltage electrical systems. Part of the advanced Mersen Limitor®-PTD series, it incorporates Controlled Power Dissipation (CPD) technology and an integrated thermal striker for enhanced operational safety and equipment protection.
Designed for use in conjunction with air-insulated and gas-insulated switchgear, the A1000293 combines exceptional current-limiting performance with low switching voltage and excellent thermal characteristics. Manufactured using pure silver fuse elements, silver-plated copper terminals and a durable ceramic body, it provides dependable long-term protection in demanding utility and industrial applications.
With a rated voltage of 36 kV AC, a rated current of 50 A and a maximum breaking capacity of 20 kA, this fuse is ideally suited to protecting distribution transformers while minimising thermal and mechanical stresses during fault conditions. The integrated 80 N thermal striker can actuate compatible switchgear mechanisms for additional system protection.
Key Advantages
- Designed specifically for high-voltage transformer protection.
- 36 kV AC IEC rated voltage.
- 50 A rated current.
- 20 kA breaking capacity.
- Controlled Power Dissipation (CPD) technology.
- Integrated 80 N thermal striker.
- Suitable for air-insulated and gas-insulated switchgear.
- High current limitation helps minimise transformer damage during faults.
Key Features
- Mersen Limitor®-PTD transformer back-up fuse.
- Manufacturer part number: A1000293.
- Catalogue number: 45DB360V50PTD.
- Rated voltage: 36 kV AC.
- Rated current: 50 A.
- Maximum breaking capacity: 20 kA.
- Minimum interrupting current: 220 A.
- Fuse dimensions: 88 × 537 mm.
- Thermal striker: 80 N.
- Clip-mounted cylindrical terminals.
Reliable Protection for High-Voltage Transformers
The Mersen A1000293 is engineered to interrupt severe short-circuit currents before they can damage distribution transformers or associated switchgear. Its current-limiting characteristics reduce both the peak fault current and the total energy released into the protected installation, helping extend equipment life and improve system reliability.
The integrated CPD thermal striker enhances operational safety by providing mechanical indication and actuating compatible switchgear where required. This makes the fuse particularly suitable for compact substations and modern gas-insulated switchgear installations.
Typical Applications
- Medium and high-voltage distribution transformers.
- Gas-insulated switchgear (GIS).
- Air-insulated switchgear.
- Compact transformer substations.
- Industrial electrical distribution.
- Utility transmission and distribution networks.
- High-voltage commercial installations.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Device Type | Fuse link | |
| Fuse Type | High voltage | |
| Current | 50 A | |
| Voltage | 36000 V | |
| Manufacturer | Mersen | |
| Series | Limitor®-PTD | |
| Manufacturer part number | A1000293 | |
| Catalogue number | 45DB360V50PTD | |
| Product type | DIN high-voltage transformer back-up fuse | |
| Rated voltage | 36 kV AC IEC | |
| Rated current | 50 A | |
| Maximum breaking capacity | 20 kA | |
| Minimum interrupting current | 220 A | |
| Clearing I²t | 40 kA²s | |
| Cold resistance | 41 mΩ (±10%) | |
| Power dissipation | 183 W | |
| Fuse diameter | 88 mm | |
| Nominal fuse length | 537 mm | |
| Mounting | Clip mounting | |
| Terminal type | Cylindrical | |
| Terminal material | Silver-plated copper | |
| Fuse element | Pure silver | |
| Body material | Ceramic | |
| Striker force | 80 N thermal striker | |
| Current type | AC | |
| Product weight | Approximately 6.5 kg | |
| EAN | 3605340455786 | |
| Compliance | IEC 60282-1, RoHS compliant | |
| HS Code | 85351000 | |
| Country of Manufacture | Hungary |
Frequently Asked Questions
What is the Mersen A1000293 used for?
The A1000293 is a DIN high-voltage back-up fuse designed to protect distribution transformers against damaging short-circuit currents.
What is the voltage rating?
This fuse has a rated operating voltage of 36 kV AC.
What is the current rating?
The Mersen A1000293 has a rated current of 50 A.
What is the breaking capacity?
The fuse provides a maximum AC breaking capacity of 20 kA with a minimum interrupting current of 220 A.
What does the thermal striker do?
The integrated 80 N thermal striker provides mechanical indication and can actuate compatible switchgear mechanisms to improve transformer protection.
Which switchgear applications is this fuse suitable for?
The A1000293 is suitable for compatible air-insulated and gas-insulated switchgear used in transformer protection applications.
Trusted High-Voltage Protection from Mersen
Mersen Limitor®-PTD fuse-links are trusted worldwide by transformer manufacturers, utilities, switchgear builders and industrial engineers to deliver dependable transformer protection in demanding high-voltage power systems.
