Hubbell VFD Electrical Disconnect Safety Switch Technology
Circuit Lock VFD Electrical Disconnect Safety Switch
Hubbell’s Circuit Lock electrical motor VFD disconnect switch combines a motor controller and disconnects into one compact, mountable VFD safety wiring device.
VFD disconnect switches for variable frequency drives ensure electrical circuits are powered-down and de-energized for maintenance.
Because the motor controller doubles as an electrical disconnect, Hubbell’s VFD disconnect can isolate more safety positions throughout your facility. This means quick access and safe power termination while maintenance is performed on a single motor. There’s no need to shut down the entire line. According to Hubbell, this VFD disconnect technology reduces motor tag-out more than 65%.
Electrical Disconnect Safety Code Compliant
Hubbell’s VFD disconnect meets NEC section 430.102(B), requiring motor controllers to have disconnect switches in line-of-sight from the motor-driven equipment. The motor controller and disconnect combination also satisfy NEC Disconnect rules, OSHA lockout tagout (LOTO) and is NSF (international) hazardous and hygiene certified. Meeting these global standards streamlines moving your facility into new markets.
Quick access and safe power termination…Circuit Lock VFD disconnects reduce motor tag-out more than 65%. - Hubble
Wiring Devices for Hazardous Locations: Hubbell’s non-fused disconnect switches are designed for safety where flammable gasses or vapors, or ignitable dust and fibers are present. They are also suited for damp, wet and corrosive situations such as wash-down environments. Copper-Free aluminum construction with a polyester/epoxy finish resists corrosion.
Circuit Lock compact enclosures can be wall-mounted or affixed to equipment, saving space and allowing easy access. The full line of VFD electrical motor disconnects includes Non-metallic, aluminum, die-cast and stainless steel enclosures to protect your investment.
Hubbell manufactures one of the most complete lines of motor disconnects on the market
Fused and Non-Fused: What’s the Difference?
Fused Disconnect Switches provide fused switched control of a directly wired load. A safety switch can be combined with other fuses in a single enclosure. This is referred to as a fusible safety switch. The switch provides a convenient means to manually open and close the circuit, and the fuse provides overcurrent protection The switch cannot be turned ON unless the enclosure cover is closed – a safety feature for high fault levels. Hubbell’s fused disconnects come in 30 and 60 Amp.
Non-Fused switches are mounted separately in a fixed position. A safety switch with no associated fuses is referred to as a non-fusible safety switch. A non-fusible safety switch has no circuit protection capability. It simply provides a convenient means to open and close a circuit. Non-fused disconnects are typically used when only a disconnect is required and additional overcurrent protection is not required They’re not designed where high fault levels are present. Hubbell Non-Fused electrical disconnects are rated at 20, 30, 60 and 100 Amp,
Simply put, if you’re looking to safely terminate power at any point in the circuit, Hubbell Circuit Lock gives you a compact solution.
