Schneider Electric (Erie) AT33A00T Actuator

The Schneider Electric Erie AT33A00T Actuator is a field-proven solution for precision flow management in closed hydronic heating and cooling systems. Engineered for reliability, this 24Vac motorized actuator utilizes a three-wire floating signal to provide modulating-style control without the need for complex linkages. As a non-spring return actuator, it maintains its last position upon signal loss, while the integrated time-out feature prevents motor burnout by de-energizing the drive after 30 minutes of continuous signal, significantly extending the service life of the synchronous motor and gear train.

Designed for professional contractors, the Erie PopTop actuator system allows for seamless installation or replacement onto VT/VS series valve bodies without draining the system. The PopTop connection ensures a secure mechanical fit with a simple push-button release, while the terminal block connections simplify field wiring. With a NEMA 1 protection rating and a manual operating lever for rapid system flushing and commissioning, the AT33A00T is a staple for maintaining high-performance HVAC infrastructure.

• PopTop Technology: Quick-release button allows for actuator replacement in seconds without disturbing pipework.
• Built-in Time-Out: Protects the 24V actuator motor from premature failure by timing out if the control signal persists beyond the travel limits.
• Magnetic Clutch: Minimizes wear on the gear train by allowing the motor to over-travel without physical damage.
• Manual Override: Includes a dedicated lever to manually position the valve for system setup or emergency cooling/heating requirements.
• Contractor-Friendly Wiring: Features easy-access terminal blocks that eliminate the need for wire nuts and reduce installation time.

Is the AT33A00T compatible with 3-way valve bodies?
Yes, it is fully compatible with both 2-way and 3-way Erie PopTop valve bodies used in chilled or hot water applications.

What happens if power is lost?
As a non-spring return (NSR) model, this actuator will remain in its current position until power is restored and a control signal is received.

Can I use this for steam applications?
The Schneider Electric AT33A00T is rated for use with VS series valves in low-pressure steam applications up to 15 psi.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.