Time Delay Dive Fuse, 250 V, 40A

DiversiTech 7-CRNR40 | 40A RK5 Dual Element Time Delay Fuse, 250V The DiversiTech 7-CRNR40 is a 40-amp, 250 VAC dual element time delay fuse designed for overcurrent protection in HVAC systems and other inductive load applications. Its dual-element construction allows short-duration current surges—such as motor inrush—to pass without nuisance tripping, while still providing protection against sustained overloads and short circuits. This fuse meets UL Class RK5 requirements and is rated for interrupt currents up to 200,000 amps, making it suitable for use in high-fault current environments. It is commonly used to protect compressors, motors, and control transformers in both commercial and industrial HVAC installations. Product Features Dual Element Design – Allows time-delay response for motor startup, reducing unnecessary interruptions Interrupt Rating: 200 kA – High breaking capacity provides protection in fault conditions UL Class RK5 – Complies with UL standards for overcurrent protection Voltage Rating: 250 VAC – Suitable for a wide range of low-voltage power distribution systems Amperage Rating: 40 A – Ideal for mid-range protection of HVAC loads Current Limiting – Reduces potential for downstream equipment damage in short-circuit scenarios Specifications Fuse Type: Dual element, time delay Class: RK5 Voltage: 250 V AC Interrupting Rating: 200,000 A RMS symmetrical Amperage: 40 amps Application: HVAC motors, compressors, control panels, general branch circuit protection Installation Notes Install only in properly rated fuse holders or disconnects. This fuse is designed for circuits where temporary inrush is present, particularly inductive loads. For compliance and safety, installation should be performed by a licensed electrician familiar with NEC and local code requirements.