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Frequently Asked Questions
What is the SIEMENS HR21 fuse rejection kit used for?
The SIEMENS HR21 fuse rejection kit is used to convert a 30 A disconnect switch to accept Class R fuses, preventing insertion of lower-rated fuses. It is commonly applied in industrial control panels, motor disconnects, and branch-circuit protection across machining, HVAC, and power transmission systems.
What are the specifications of the SIEMENS HR21 fuse rejection kit?
The SIEMENS HR21 is a UL Class R fuse rejection kit rated for 240 V AC. It is designed for use with a 30 A disconnect switch. The kit ensures only Class R fuses can be installed, enhancing safety by rejecting fuses with lower interrupting ratings. The manufacturer part number is HR21.
Where to buy the SIEMENS HR21 fuse rejection kit worldwide?
3G Electric supplies the SIEMENS HR21 fuse rejection kit worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us to order this genuine SIEMENS part for your disconnect switch application.
How to install the SIEMENS HR21 fuse rejection kit?
To install the SIEMENS HR21 kit, first de-energize the disconnect switch. Remove the existing fuse holders and install the rejection kit per the manufacturer's instructions, ensuring proper alignment with the Class R fuse clips. Always follow lockout/tagout procedures and consult a qualified electrician for safe installation.
Used in
Common applications for SiemensSiemens Products
3G Electric supplies Siemens fuse kits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.
