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FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 20 VA Power Rating, 277V AC - Open Class 2 Transformers
FUNCTIONAL DEVICES INC / RIBOpen Class 2 Transformers

FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 20 VA Power Rating, 277V AC

The FUNCTIONAL DEVICES INC / RIB Class 2 Transformer is an open-style transformer with a 20 VA power rating. It features a foot mounting style, a 277V AC primary input, and a 24V AC secondary output, with wire lead…

SKU 3G-OTH-49222

Brand
FUNCTIONAL DEVICES INC / RIB
Item
Class 2 Transformer: 20 VA Power Rating, 277V AC
Category
Open Class 2 Transformers
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Technical Specifications

FUNCTIONAL DEVICES INC / RIB
Manufacturer Part Number
TR20VA007
Type
Foot/Hub
AC
277V
Mounting
Foot
Input Voltage
277V AC
Output Voltage
24V AC
Connection - Primary
Wire Lead
Connection - Secondary
Wire Lead
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FUNCTIONAL DEVICES INC / RIB Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The FUNCTIONAL DEVICES INC / RIB Class 2 Transformer is an open-style transformer with a 20 VA power rating. It features a foot mounting style, a 277V AC primary input, and a 24V AC secondary output, with wire lead connections on both the primary and secondary sides (MPN TR20VA007).

Frequently Asked Questions

What is the FUNCTIONAL DEVICES INC / RIB TR20VA007 transformer used for?

This open Class 2 transformer steps down 277V AC to 24V AC at 20 VA, commonly used to power low-voltage controls, relays, and automation devices in commercial HVAC, lighting, and building management systems.

What are the specifications of the FUNCTIONAL DEVICES INC / RIB TR20VA007?

The TR20VA007 is a 20 VA open-style transformer with 277V AC primary input and 24V AC secondary output. It features foot mounting and wire lead connections on both primary and secondary sides. The manufacturer part number is TR20VA007.

Where to buy the FUNCTIONAL DEVICES INC / RIB TR20VA007 worldwide?

3G Electric supplies the FUNCTIONAL DEVICES INC / RIB TR20VA007 transformer worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this open Class 2 transformer.

How to install the FUNCTIONAL DEVICES INC / RIB TR20VA007 transformer?

Mount the transformer securely using the foot mounting holes. Connect the 277V AC primary wires to the supply, and the 24V AC secondary wires to the load. Ensure the total VA draw does not exceed 20 VA. Follow local electrical codes and disconnect power before installation.

Used in

Common applications for FUNCTIONAL DEVICES INC / RIB
HVAC control systems — Functional Devices Inc. / RIB PSH series transformers provide 24V AC power for thermostats and damper actuators.
Burner management — Functional Devices Inc. / RIB TR50VA022US transformer supplies low-voltage power for flame safeguard controllers.
Pump control panels — Functional Devices Inc. / RIB PSH500A-LVC power supply delivers 24V AC for relay logic in pump sequencing.
Lighting control — Functional Devices Inc. / RIB SIB04S rocker switch enables manual override of relay-controlled lighting circuits.
Industrial automation — Functional Devices Inc. / RIB PSH300A transformer powers 24V AC sensors and PLC input modules.
Gas valve actuation — Functional Devices Inc. / RIB enclosed transformers provide isolated 24V AC for solenoid valves in gas trains.

FUNCTIONAL DEVICES INC / RIB Products

3G Electric supplies FUNCTIONAL DEVICES INC / RIB open class 2 transformers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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