Top of cabinet BM protection for small busbars

For small busbars, cold-applied busbar insulation covers like TE Connectivity's BMOD series provide effective top-of-cabinet protection against accidental contact and flashover.

TE Connectivity BMOD Covers

TE Raychem BMOD covers are cold-applied insulation covers designed for low-voltage busbars up to 1 kV and small busbars with a maximum thickness of 12 mm . They provide flashover protection for Tee, Elbow, and Straight busbar connections and are suitable for confined spaces due to their compact sizes (50 mm, 75 mm, 100 mm). The covers feature push-fit latches for easy installation and removal, making them ideal for retrofitting existing panels . They can be used in control cabinets, switchgear, and substations.

Busbar Insulators for Compact Panels

For additional mechanical and electrical insulation, fiberglass-reinforced DMC/BMC busbar insulators are recommended. These insulators offer high dielectric strength, heat resistance, and dimensional stability, making them suitable for small busbar assemblies in low-voltage panels . They come in various heights, diameters, and mounting options, allowing designers to maintain safe creepage distances and panel spacing while ensuring secure top-of-cabinet protection.

Cabinet Accessories and Mounting

Control cabinet accessories such as DIN rails, wiring ducts, and cable ties can complement busbar protection by organizing wiring and providing additional mechanical separation . Proper mounting ensures that busbars remain insulated and reduces the risk of accidental contact at the top of the cabinet.

Key Considerations

• Voltage rating: Ensure the cover or insulator matches the busbar voltage (BMOD low-voltage covers up to 1 kV).
• Busbar size: Confirm maximum thickness compatibility (BMOD up to 12 mm).
• Installation: Cold-applied, push-fit covers allow easy retrofitting without disassembly.
• Creepage and clearance: Use insulators to maintain safe distances between busbars and cabinet surfaces.
• Reusability: BMOD covers can be removed and reused, which is useful for maintenance. By combining BMOD insulation covers with fiberglass-reinforced insulators and proper cabinet accessories, small busbars can be effectively protected at the top of control cabinets, ensuring both electrical safety and mechanical stability .