Chatsworth Products 40153-020, TMGB Pattern Busbar 4W x 0.25H x 20L Copper

Chatsworth Products 40153-020 Telecommunications Main Grounding Busbar (TMGB) is a copper PBB pattern busbar that provides a central bond attachment point for ICT bonding backbones, equipment, and the building’s ground electrode system. It measures 4H x 20W x 1/4D (50 mm x 510 mm x 6.4 mm) and features hole patterns that accommodate two-hole lugs per ANSI/BICSI N3-20 and ANSI/TIA-607 recommendations. The busbar ships preassembled and mounts on the wall, floor, or ceiling for flexible installation.

Chatsworth Products 40153-020 Technical Specs

Product Type & Application

Type	PBB
Component	Busbars
Application	Rack/cabinet/enclosure

Materials & Construction

Material rating	Copper
Material	Copper
Insulators	Electrically isolate busbars from the wall or other mounting surfaces to help control the current path

Dimensions & Physical Specs

Dimensions	4H x 20W x 1/4D (50 mm x 510 mm x 6.4 mm)
Width	20 (508 mm)
Height	4 (101.6 mm)
Depth	0.3 (6 mm)

Mounting & Installation

Hole pattern	Accommodate two-hole lugs per the recommendation of ANSI/BICSI N3-20 and ANSI/TIA-607 standards
Mounting locations	Wall, floor or ceiling
Mounting brackets	Manufactured from high-quality 300 series stainless steel with 3/8” (9.53 mm) diameter mounting holes spaced 5.75” (146.1 mm) apart

Compliance & Certifications

UL listing	UL Listed, File E236184, Category KDER (US), KDER7 (Canada)
BABA compliant	Yes

Packaging & Origin

Ships	Preassembled
Packaging	Sold individually
Country of origin	US

Chatsworth Products 40153-020 Applications

• Creates a central ground attachment point for telecommunications bonding backbones, equipment, and the building’s ground electrode system.
• Supports rack, cabinet, and enclosure grounding installations where a dedicated bonding point is needed.
• Meets installation needs for two-hole lug connections aligned with ANSI/BICSI N3-20 and ANSI/TIA-607 recommendations.
• Helps in mounting scenarios where electrical isolation from the mounting surface is needed to control the current path.
• Allows flexible placement by mounting on the wall, floor, or ceiling.

Shipping & Availability

Ship length/depth	53 (1346 mm)
Ship width	7 (18 cm)
Ship height	3 (8 cm)
Shipping weight	8 LB (3.63 kg)

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