Abb TM4020RCU 200A 40-circuit Load Center 120/240V Nema 3R

Product Description

The ABB TM4020RCU is a 200-amp, 40-circuit, single-phase load center rated for 120/240-volt, 1-phase 3-wire residential and light commercial electrical distribution. It carries a 22,000-amp interrupting capacity (22kAIC) and is housed in a NEMA 3R rain-tight enclosure, making it suitable for outdoor or covered exterior installations. Licensed electricians install this unit as the main distribution point between the utility service entrance and branch circuits throughout a structure. The 40-circuit capacity accommodates a full complement of single-pole and double-pole breakers for standard residential builds or small commercial panels.

This load center is intended for single-phase, 3-wire service entrance or distribution applications in residential and light commercial settings. Its NEMA 3R enclosure rating protects internal components from rain, sleet, and ice formation, making it a common choice for detached garages, outbuildings, pool houses, and other outdoor-fed structures where weather exposure is a factor. The 200-amp main breaker configuration and 40-circuit count align with current residential service sizing requirements in most jurisdictions.

Key Features

• 200-amp main breaker rating supports full residential service entrance loads
• 40-circuit capacity for single-pole and double-pole branch circuit breakers
• 22kAIC interrupting capacity meets NEC requirements for most residential applications
• 1-phase, 3-wire (1P3W) configuration at 120/240 volts
• NEMA 3R rain-tight enclosure rated for outdoor and exposed installations

Compatibility

Designed as an OEM-style single-phase load center for 200-amp residential and light commercial electrical distribution systems requiring a NEMA 3R outdoor-rated enclosure.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Utility power must be confirmed off at the service entrance before any wiring connections are made inside the enclosure. Verify that conductor sizing, grounding electrode connections, and neutral bonding comply with NEC Article 230 for service entrance equipment. Do not exceed the rated 200-amp main breaker or 22kAIC fault current values for the installation site.

Technical Specifications

• Main Amperage Rating: 200 amps
• Circuit Count: 40 circuits
• Phase Configuration: 1-phase, 3-wire (1P3W)
• Voltage Rating: 120/240 volts
• Interrupting Capacity: 22,000 amps (22kAIC)
• Enclosure Rating: NEMA 3R Rain Tight
• UPC: 783164113167

Standard Information

• Brand: ABB
• Manufacturer Part Number: TM4020RCU