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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | OptiFuse |
| Manufacturer Product Number | RS120-025 |
| Description | PTC Fuse; 0.25 A; 120 VAC/DC |
| Datasheet | Download Datasheet |
The OptiFuse RS120-025 is a 250 mA hold radial-lead resettable PTC fuse, rated 120 VAC/DC maximum.
A PTC fuse carries its hold current indefinitely; on an overcurrent it heats, its resistance rises sharply and it limits the current to a trickle, then resets on its own once the fault is removed and power is cycled. This one always trips at 500 mA, in max. 7.5 s at 5 x IH.
It withstands a fault current of up to 3 A at rated voltage and interrupts up to 135 V. Resistance: minimum 1.25 Ω, 3.00 Ω maximum one hour after tripping. Tripped, it dissipates typically 1.08 W. It operates from -40 to +85 °C.
Construction: outline 7.9 W x 13.0 H x 3.8 T mm (max.); lead spacing 5.1 mm; leads 22 AWG (0.65 mm); tin plated copper.
| Category | |
| Manufacturer | OptiFuse |
| Model | RS120 |
| Hold Current (A) | 0.25 |
| Trip Current (A) | 0.50 |
| Max Voltage | 120 VAC/DC |
| Max Interrupt Voltage | 135 V |
| Max Fault Current (A) | 3.0 |
| Time to Trip | max. 7.5 s at 5 x IH |
| Power Dissipation (W) | 1.08 |
| Min Resistance (Ω) | 1.25 |
| Max Resistance 1 h After Trip (Ω) | 3.00 |
| Mounting Style | Radial Lead (Through-Hole) |
| Size | 7.9 W x 13.0 H x 3.8 T mm (max.) |
| Lead Spacing | 5.1 mm |
| Lead Size | 22 AWG (0.65 mm) |
| Lead Material | Tin plated copper |
| Operating Temperature (°C) | -40 to +85 |