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The MERSEN SBS1 is a midget fuse designed for overcurrent protection in low-amperage electrical circuits. Midget fuses of this type serve as sacrificial protective devices that open the circuit when current exceeds a safe threshold, preventing damage to downstream components, wiring, and control boards. This fuse is a compact form-factor component commonly found in HVAC control panels, motor control centers, and light industrial equipment. Licensed electricians and HVAC technicians are the primary installers. Each pack contains 10 fuses, making it a practical stock item for service vehicles and shop inventory.
Midget fuses in this class are used in residential and light commercial applications where panel space is limited and precise overcurrent protection is required. Typical install locations include fused disconnect blocks, control circuit fusing, and supplemental overcurrent protection inside equipment enclosures. The compact body dimensions of 1.620 inches by 0.880 inches by 2.120 inches allow fitment in standard midget fuse holders commonly used across HVAC, refrigeration, and electrical control applications.
Designed as an OEM-style replacement midget fuse for use in standard midget fuse holders found in HVAC control panels, motor control centers, and light commercial electrical enclosures.
Installation should be performed by a licensed electrician or qualified HVAC technician in accordance with applicable NEC requirements. Always de-energize and lock out the circuit before replacing fuses. Verify the replacement fuse matches the amperage and voltage rating required by the equipment documentation. Never substitute a fuse with a higher rating than specified by the original equipment manufacturer.
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