Abb CR104PEX Hoa Switch Nema 1 Enclosure

Product Description

The ABB CR104PEX is a Hand-Off-Auto (HOA) selector switch assembly housed in a NEMA 1 enclosure. HOA switches provide local control over motor-driven equipment by allowing an operator to manually run a load, take it offline, or return it to automatic control from a building management or control system. This type of switch is a standard control component in HVAC, pumping, and industrial applications where operators need to override automatic sequences during startup, testing, or maintenance. Licensed electricians and controls technicians are the typical installers for this device.

The CR104PEX is suited for panel-mounted or wall-mounted installations in indoor environments where a basic NEMA 1 enclosure provides adequate protection against accidental contact and dust. It is commonly installed in mechanical rooms, equipment rooms, and light industrial spaces to provide local override capability for motors, fans, pumps, and similar loads. The NEMA 1 rating is appropriate for dry, indoor locations only and is not suitable for wet, corrosive, or outdoor environments.

Key Features

• Three-position Hand-Off-Auto (HOA) selector switch for local motor control override
• NEMA 1 enclosure rated for dry indoor installations
• Allows operators to switch between manual, off, and automatic control modes
• Standard control component for HVAC, pumping, and light industrial systems
• Compact assembly suitable for mechanical room and equipment room installations

Compatibility

Designed as an OEM-style Hand-Off-Auto switch assembly for use in indoor control panels and equipment installations requiring NEMA 1 enclosure protection.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the circuit and verify absence of voltage before wiring or mounting the assembly. The NEMA 1 enclosure is rated for dry indoor locations only and must not be installed in wet, outdoor, or corrosive environments. Confirm control voltage and contact ratings are compatible with the connected load before completing the installation.

Technical Specifications

• Enclosure Type: NEMA 1
• Switch Type: Hand-Off-Auto (HOA)
• UPC: 783166609330

Standard Information

• Brand: ABB
• Manufacturer Part Number: CR104PEX