Description
The Mersen ATM20 is a fast-acting 20A midget fuse rated for 600V AC and 600V DC, designed for a wide range of applications requiring reliable current protection outside of branch-circuit protection. With a 100 kA interrupting rating, this Amp-Trap® fuse provides high fault-current protection in a compact midget fuse design. The ATM series is suited to applications requiring higher inrush current tolerance and tougher duty cycles, making it a practical choice for specialized applications such as capacitor protection.
Key Features
- 20A Fast-Acting Protection: Provides fast-acting overcurrent protection for a wide range of general-purpose applications.
- 600V AC/DC Rating: Rated for electrical systems up to 600V AC and 600V DC.
- 100 kA Interrupting Rating: Provides high interrupting capacity for applications with significant available fault current.
- Midget Fuse Design: Compact construction provides reliable protection in applications where space is limited.
- Higher Inrush Tolerance: The ATM series is designed to withstand higher inrush currents and tougher duty cycles in specific applications.
- Ferrule Connection: Features a ferrule terminal design with tin-plated copper connection material and clip mounting.
- Not for Branch Circuit Protection: Intended for applications outside of branch-circuit protection.
Specifications
| Technical Specification | Details |
|---|---|
| Product Series | ATM – Midget – Fast-Acting |
| Item Number | ATM20 |
| Ampere Rating | 20 A |
| Rated Voltage AC UL | 600 V AC |
| Rated Voltage DC UL | 600 V DC |
| Frequency | 50/60 Hz |
| Fuse Class | Midget |
| Speed/Characteristic | Fast-Acting |
| Mounting | Clip |
| AC Max Interrupting Rating | 100 kA |
| Connection/Terminal Material | Tin-Plated Copper |
| Connection/Terminal Type | Ferrule |
| Product Diameter | 0.41″ |
| Product Length | 1.50″ |
| Product Weight | 0.017 lbs |
| Body/Insulating Material | GMG |
| RoHS Compliant | Yes |
| AC or DC | AC/DC |
| Product Group | Low Voltage UL/CSA Fuses |






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