S&C High-Voltage Fuses

Choose S&C SMU‑20, SM‑4, and SM‑5 fuses for medium‑voltage indoor switchgear — widely applied across 5 kV–34.5 kV class equipment for transformer, feeder, and capacitor protection.

Voltage classes based on manufacturer literature. See data sheet for details.

• Well-documented time-current characteristics for coordination
• High interrupting ratings in compact forms
• Broad voltage coverage from 5 kV up to 34.5 kV

Field‑proven distribution protection with SMD‑20, SM‑4, SM‑5, and SMD‑40 styles covering 5 kV–34.5 kV feeders, transformers, and capacitor banks.

Voltage classes based on manufacturer literature. See data sheet for details.

• Excellent outdoor performance & weather resistance
• Compatible mountings across common distribution hardware
• Clear visual indication & easy replacement workflows

Transmission‑class dropout and solid‑mount fuses for substation and line protection where higher BILs and interrupting duties apply.

Voltage classes based on manufacturer literature. See data sheet for details.

• Transmission-class voltage ratings and robust interrupting capacity
• Designed for substations & line protection scenarios
• Coordinates with breakers, relays, and transformer through-fault limits

Universal‑style Positrol® links in Standard, “K”, “T”, “QR”, and “N” speed characteristics, with straightforward cross‑reference to major brands.

• Interchangeable mechanically with competitive links of same speed
• Removable button heads; common 23‑inch overall length
• Clear speed coding for coordination & stockroom simplicity

Tell us your voltage class, amp rating, duty, and mounting. We’ll match the correct S&C part numbers and ship today.