Bussmann 170M5258 High Speed Fuse
Shop the genuine Bussmann 170M5258 High Speed Fuse. Featuring a 400A current rating, 690V/700V AC voltage, and Class aR semiconductor protection in a Size 2KN/110 square body. Ideal for protecting industrial power electronics and motor drives.
Bussmann 170M5258 High Speed Fuse
The Bussmann 170M5258 is a premium high-speed square body fuse engineered specifically for the robust protection of power semiconductor devices. With a rated current of 400A and a dual voltage rating of 690V AC (IEC) and 700V AC (UL), this Class aR fuse delivers exceptional performance in limiting let-through current and clearing faults rapidly. Featuring a compact Size 2KN/110 form factor and an impressive interrupting rating of 200kA, it ensures reliable safeguarding for heavy-duty industrial applications, inverters, rectifiers, and motor drives. Manufactured in Hungary, it complies with stringent CE and cRUus international standards, offering ultra-low power dissipation and a cold resistance of approximately 0.2796 mΩ at 21°C.
Technical Specifications:
- Brand: Bussmann
- Model: 170M5258
- Fuse Type: High Speed / Square Body
- Rated Current: 400A
- Rated Voltage: 690V AC (IEC) / 700V AC (UL)
- Interrupting Rating (IR): 200kA at 700V
- Characteristic Class: aR (Semiconductor Protection)
- Size: 2KN/110
- Cold Resistance: 0.2796 mΩ (at 21°C)
- Certifications: CE, cRUus
- Country of Origin: Hungary

| Brand | Bussmann |
|---|---|
| Model | 170M5258 |
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