800T-H2A | Allen-Bradley 30.5mm 2-Position Maintained Selector Switch, Metal Operator

The 800T-H2A is a 30mm two-position maintained selector switch designed by Allen-Bradley for industrial control applications. As part of the robust 800T product line, it allows operators to select between two distinct states, such as ON/OFF, MANUAL/AUTO, or FORWARD/REVERSE. This model features a durable metal base and complies with NEMA Type 4/13 ratings, making it ideal for harsh environments where exposure to dust, oil, and moisture is expected. Its simplicity, reliability, and compatibility with standard panel cutouts make it a popular choice in motor control centers, automation panels, and machine operator stations.

The 800T-H2A comes pre-configured with a standard contact block consisting of:

• 1 Normally Open (NO) contact
• 1 Normally Closed (NC) contact
• Standard screw terminals for secure and easy wire connections
• No terminal guards, requiring caution during installation

This dual-contact setup allows for flexible control logic such as simultaneously enabling one device and disabling another, or providing a control signal and feedback loop within one action.

The 800T-H2A uses a maintained cam mechanism:

• The selector stays in the chosen position (left or right) until it is manually switched again.
• This is ideal for mode selection or state retention, where the switch should not reset automatically.
• It’s commonly used when the switch position directly controls a continuous process or defines a system state, such as "Local/Remote" or "Jog/Run."

Unlike momentary (spring-return) models, this maintained style does not revert to center automatically, which reduces accidental operation and ensures reliable mode selection.

Installation of this selector switch is straightforward and conforms to standard practices in industrial panel design. The process includes:

• Panel Cutout: Mounts in a 30.5mm diameter panel hole using the provided locknut and washer.
• Mounting Style: Front-of-panel installation with metal threaded bushing.
• Wiring: Screw clamp terminals at the rear of the contact block provide secure and reliable electrical connections.
• Positioning: The selector cam mechanism is mechanically indexed for precise two-position control (typically left and right or top and bottom depending on mounting orientation).
• Optional accessories: Such as protective legend plates and anti-rotation rings, are available for additional support and customization.

This ensures quick installation while maintaining compatibility with most standard enclosures.

Yes, the 800T-H2A is currently listed with an Active lifecycle status by Rockwell Automation. This means it is still in production, fully supported, and available for purchase through official distributors and Rockwell partners.