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MERSEN FUSE 11 URD 73 EF 0800 PC73UD11C800EF
High-speed Protistor® fuse delivering rapid arc quenching and reliable short-circuit protection up to 1100VAC IEC, 1200VAC UL, and 800A with striker indication and open slot blade terminals.
£175.45
Why Choose the Mersen D300636 Industrial Fuse?
The Mersen D300636 is an industrial electrical fuse designed to provide dependable overcurrent and short-circuit protection within compatible power distribution, control and power electronic equipment. Manufactured by Mersen, a recognised specialist in electrical protection, this fuse is suitable for maintenance, repair and original equipment applications where the exact D300636 reference is specified.
Correctly selected fuses help interrupt dangerous fault currents before excessive thermal or electrical stress damages cables, semiconductor components and connected equipment. The Mersen D300636 provides a replaceable protection component for industrial systems in which reliable circuit isolation and straightforward maintenance are important.
Its industrial construction makes it suitable for use in control panels, machinery, power conversion equipment and electrical assemblies. Before installation, the fuse rating, operating class, dimensions, terminal arrangement and breaking capacity should be checked against the equipment documentation or the fuse being replaced.
Key Advantages
- Industrial fuse designed for electrical circuit protection.
- Helps protect equipment against damaging overcurrent and short-circuit conditions.
- Suitable for maintenance, repair and replacement applications.
- Supports reliable isolation of a faulted electrical circuit.
- Manufactured by Mersen, a specialist in electrical protection products.
- Identified by the precise manufacturer reference D300636.
Key Features
- Mersen industrial fuse technology.
- Manufacturer reference D300636.
- Designed for use in compatible industrial electrical equipment.
- Replaceable protective component for efficient system maintenance.
- Supports coordinated protection within electrical assemblies.
- Suitable for control, power distribution and power electronic applications.
- Robust construction for industrial operating environments.
- Designed to interrupt electrical faults when correctly specified and installed.
Reliable Protection for Industrial Electrical Equipment
Electrical fuses protect equipment by opening a circuit when current exceeds the fuse’s specified operating limits. This helps reduce the risk of severe component damage, overheating and prolonged equipment downtime following an electrical fault.
Fuse selection must account for the rated current, voltage, utilisation category, time-current characteristic, breaking capacity and physical configuration. The Mersen D300636 should only be installed where the equipment documentation or original component specifies this exact reference or confirms full electrical and mechanical compatibility.
Typical Applications
- Industrial electrical control panels.
- Power distribution and switching equipment.
- Motor control and automation systems.
- Power converters and electronic equipment.
- Manufacturing and processing machinery.
- Maintenance and replacement of compatible Mersen fuse installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1100 V | |
| Item number | D300636 | |
| Catalogue No | PC73UD11C800EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1100VAC IEC 1200VAC UL 800A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340331394 | |
| Rated voltage AC UL | 1200 V | |
| Rated voltage AC IEC | 1100 V | |
| Ampere Rating | 800 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1230 kA²s | |
| Melting I2t | 190 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 150 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Open Slot Blades | |
| Product Width | 73 mm | |
| Product Length | 149.4 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.11 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 180 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.11 kg | |
| Power Dissipation at Rated Current Value | 148 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen D300636 used for?
The Mersen D300636 is used to provide overcurrent and short-circuit protection within compatible industrial electrical equipment.
Can the D300636 be used as a direct replacement fuse?
It can be used where the original equipment specifies Mersen D300636. All electrical ratings, dimensions and terminal details should be checked before replacement.
What ratings should be checked before installation?
Check the rated current, voltage, operating class, breaking capacity, time-current characteristic, dimensions and connection type against the equipment documentation.
Where is this fuse typically installed?
It may be installed in compatible industrial control panels, machinery, power distribution systems and power electronic equipment.
Can a fuse with a different current rating be substituted?
No substitution should be made unless the alternative fuse has been approved by the equipment manufacturer and matches every required electrical and mechanical specification.
Trusted Industrial Electrical Protection
Mersen fuses are used by electrical engineers, equipment manufacturers and maintenance professionals to provide dependable protection for industrial power and control systems.
