The DCT20-2 fast-acting midget fuse offers reliable circuit protection for demanding industrial and commercial applications, supporting up to 750VAC and 1000VDC with a 20A current rating. Its ferrule ends ensure straightforward installation and consistent connectivity in compact assemblies.
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Why Choose the Mersen DCT20-2 Fast-Acting Midget Fuse?
The Mersen DCT20-2 is a compact fast-acting Midget fuse designed to provide dependable overcurrent protection for high-voltage AC and DC electrical circuits. As part of the Mersen Amp-Trap® DCT series, it is suited to applications where sensitive equipment requires rapid interruption of damaging overload and short-circuit currents.
With a rated current of 20 A, the DCT20-2 is suitable for protecting industrial electronics, photovoltaic equipment, traction systems, test instruments and other demanding electrical installations. Its fast-acting operating characteristic helps limit the duration of fault currents, reducing thermal and electrical stress on connected components.
The compact 10 × 38 mm Midget format enables the fuse to be installed in compatible fuse holders while conserving valuable panel space. Correct fuse selection should always consider the circuit voltage, prospective fault current, required breaking capacity and the characteristics of the protected load.
Key Advantages
Fast-acting operation for rapid interruption of electrical faults.
20 A rated current for demanding industrial applications.
Suitable for high-voltage AC and DC circuit protection.
Compact 10 × 38 mm Midget cartridge format.
Helps protect sensitive electronic and electrical components.
Space-efficient design for control panels and equipment assemblies.
Key Features
Mersen Amp-Trap® DCT series.
20 A current rating.
Fast-acting time-current characteristic.
Cylindrical ferrule cartridge construction.
Compact 10 × 38 mm Midget dimensions.
Designed for compatible Midget fuse holders.
Suitable for industrial AC and high-voltage DC circuits.
Replaceable overcurrent-protection device.
Technical Specifications
Manufacturer: Mersen
Series: Amp-Trap® DCT
Model: DCT20-2
Product type: Fast-acting Midget fuse
Rated current: 20 A
Fuse size: 10 × 38 mm
Operating characteristic: Fast acting
Body format: Cylindrical cartridge
Connection type: Ferrule ends
Installation: Compatible Midget fuse holder
Voltage rating: Confirm against the applicable Mersen datasheet before installation
Breaking capacity: Confirm against the applicable Mersen datasheet and circuit requirements
Fast Protection for Sensitive Electrical Equipment
The Mersen DCT20-2 is intended for circuits that cannot tolerate prolonged overcurrent conditions. Its fast-acting element responds quickly when current exceeds the fuse's operating threshold, helping protect semiconductor devices, electronic controls, conductors and other sensitive components from excessive thermal energy.
For safe and coordinated protection, the DCT20-2 should be installed only in an approved fuse holder with voltage and current ratings suitable for the application. The prospective short-circuit current must not exceed the verified interrupting capacity of the selected fuse and holder combination.
The DCT20-2 is used to protect sensitive industrial AC and DC circuits against damaging overload and short-circuit currents.
What is the current rating of the DCT20-2?
The Mersen DCT20-2 has a rated current of 20 A.
Is the DCT20-2 a fast-acting fuse?
Yes. It has a fast-acting operating characteristic intended to interrupt excessive current rapidly and minimise stress on sensitive equipment.
What size is the Mersen DCT20-2?
The DCT20-2 uses the compact 10 × 38 mm Midget cartridge format.
Which fuse holder should be used?
The fuse should be installed in a compatible 10 × 38 mm Midget fuse holder whose current, voltage and interrupting ratings are suitable for the circuit.
Trusted High-Voltage Circuit Protection
Mersen Amp-Trap® circuit-protection products are widely used by electrical engineers, equipment manufacturers and panel builders for dependable fault interruption and protection of demanding industrial AC and DC systems.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...