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MERSEN FUSE 500V 20A TD MIDGET FUSE ATQ20
The Fuse ATQ20 delivers reliable time-delay performance for circuits with moderate inrush currents, ideal for lighting, control boards, and power supply applications up to 500VAC. Compact midget design with tin-plated copper ferrule terminals and 10 kA breaking capacity.
£5.59
Why Choose the Mersen ATQ20 Time-Delay Fuse?
The Mersen ATQ20 is a dependable 20 A time-delay midget fuse designed to provide supplementary overcurrent protection for industrial control circuits and electrical equipment. Part of the trusted Mersen Amp-Trap® ATQ series, it is ideal for protecting transformers, motors, solenoids and lighting circuits where temporary inrush currents are expected during normal operation.
Its time-delay operating characteristic allows the fuse to tolerate brief start-up current surges without nuisance operation while providing effective protection against sustained overloads and short-circuit faults. This helps maximise equipment uptime while protecting valuable electrical components.
With a rated current of 20 A and a maximum operating voltage of 500 V AC, the ATQ20 is suitable for industrial control panels, machinery and commercial electrical installations. Its industry-standard 10 × 38 mm midget format allows straightforward installation in compatible fuse holders.
Key Advantages
- Reliable time-delay fuse for industrial electrical protection.
- 20 A current rating for control and machinery circuits.
- 500 V AC voltage rating suitable for industrial applications.
- Reduces nuisance fuse operation caused by temporary inrush currents.
- Compact 10 × 38 mm midget fuse construction.
- Suitable for supplementary protection where available fault current does not exceed 10 kA.
Key Features
- Mersen Amp-Trap® ATQ series.
- 20 A rated current.
- 500 V AC rated voltage.
- Time-delay operating characteristic.
- 10 × 38 mm cylindrical midget fuse.
- Ferrule terminal construction.
- Suitable for supplementary overcurrent protection.
- RoHS compliant.
Reliable Protection for Industrial Control Circuits
The Mersen ATQ20 is designed to protect industrial electrical equipment while allowing harmless temporary inrush currents associated with motors, transformers and other inductive loads. Its time-delay performance helps ensure dependable protection against sustained overloads without unnecessary fuse replacement during normal equipment start-up.
Its compact cylindrical design enables easy installation in industrial control panels, automation systems and OEM machinery, making it an excellent choice for engineers, panel builders and maintenance professionals requiring reliable supplementary circuit protection.
Typical Applications
- Industrial control panels.
- Motor control circuits.
- Control transformers.
- Lighting control equipment.
- Automation and OEM machinery.
- Solenoids and relay circuits.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Voltage | 500 V | |
| Fuse Type | UL class | |
| Fuse Class | Time delay | |
| Item number | ATQ20 | |
| Description | Fuse ATQ - Midget - Time-Delay 500VAC 20A Ferrule Amp-Trap® | |
| EAN/UPC Code | 782001904616 | |
| Rated voltage AC UL | 500 V | |
| Frequency (Hz) | 50/60 Hz | |
| Ampere Rating | 20 A | |
| AC or DC | AC | |
| Fuse Class | Midget | |
| Speed/Characteristic | Time Delay | |
| Mounting | Clip | |
| AC Max I.R./Breaking Capacity | I1: 10 kA | |
| Connection/Terminal Material | Tin-Plated Copper | |
| Connection/Terminal Type | Ferrule | |
| Product Diameter | 10.3 mm | |
| Product Length | 38.1 mm | |
| Sell Pack Quantity | 10 EA | |
| Sell Pack Weight | 0.068 kg | |
| Sell Pack Width | 22.4 mm | |
| Sell Pack Length | 41.4 mm | |
| Sell Pack Height | 54.1 mm | |
| Product group | Low Voltage UL/CSA Fuses | |
| Body/Insulating Material | GMG | |
| Product Weight | 0.0064 kg | |
| HS Code | 85361050 | |
| Country of Manufacture | Mexico |
Frequently Asked Questions
What is the Mersen ATQ20 used for?
The ATQ20 provides supplementary overcurrent protection for industrial control circuits, motors, transformers, lighting systems and other electrical equipment.
What is the current rating of the ATQ20?
The Mersen ATQ20 has a rated current of 20 A.
What voltage is the ATQ20 rated for?
The fuse is designed for electrical systems operating at up to 500 V AC.
Is the ATQ20 a time-delay fuse?
Yes. Its time-delay characteristic allows temporary inrush currents while protecting against sustained overloads and short-circuit faults.
Can the ATQ20 be used for branch circuit protection?
No. The ATQ20 is intended for supplementary circuit protection only and should not be used as branch circuit protection.
Trusted by Electrical Professionals
Mersen Amp-Trap® ATQ time-delay fuses are widely trusted by electrical engineers, panel builders and maintenance professionals for dependable supplementary protection of industrial control systems and electrical equipment.
