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FUNCTIONAL DEVICES INC / RIB Open Class 2 Transformer - Open Class 2 Transformers
FUNCTIONAL DEVICES INC / RIBOpen Class 2 Transformers

FUNCTIONAL DEVICES INC / RIB Open Class 2 Transformer

The FUNCTIONAL DEVICES INC / RIB Class 2 Transformer is an open-style transformer with a 96 VA power rating, designed for foot mounting. It converts a 277V AC input to a 24V AC output and features wire lead…

SKU 3G-OTH-47939

Brand
FUNCTIONAL DEVICES INC / RIB
Item
Open Class 2 Transformer
Part Number
TR100VA009US
Category
Open Class 2 Transformers
Available to Order
Also known as:TR100VA009USFUNCTIONAL DEVICES INC / RIB
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

FUNCTIONAL DEVICES INC / RIB
Manufacturer Part Number
TR100VA009US
Type
Circuit Breaker
AC
24V
Mounting
Foot
Input Voltage
277V AC
Output Voltage
24V AC
Connection - Primary
Wire Lead
Connection - Secondary
Wire Lead

Technical Documents

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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 96 VA power rating, designed for foot mounting. It converts a 277V AC input to a 24V AC output and features wire lead connections for both primary and secondary sides. This unit includes a circuit breaker and is identified by manufacturer part number TR100VA009US.

Frequently Asked Questions

What is the FUNCTIONAL DEVICES INC / RIB Class 2 Transformer used for?

This open-style transformer converts 277V AC input to 24V AC output for powering low-voltage control circuits, relays, and automation equipment in commercial and industrial buildings. It is commonly used in HVAC, lighting control, and building management systems where a reliable 24V AC power source is required.

What are the specifications of the FUNCTIONAL DEVICES INC / RIB Class 2 Transformer?

The transformer has a 96 VA power rating, 277V AC input, and 24V AC output. It features foot mounting, wire lead connections on both primary and secondary sides, and includes a built-in circuit breaker. The manufacturer part number is TR100VA009US, and it is an open Class 2 design.

Where to buy the FUNCTIONAL DEVICES INC / RIB Class 2 Transformer worldwide?

3G Electric supplies the FUNCTIONAL DEVICES INC / RIB Class 2 Transformer worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead time on this TR100VA009US model.

How to install the FUNCTIONAL DEVICES INC / RIB Class 2 Transformer?

Mount the transformer securely using its foot-mounting base. Connect the primary wire leads to a 277V AC power source and the secondary wire leads to your 24V AC load. Ensure the circuit breaker is properly rated for your application. Follow all local electrical codes and consult a qualified electrician for installation.

Used in

Common applications for FUNCTIONAL DEVICES INC / RIB
HVAC control panels — Functional Devices RIB Class 2 transformers (e.g., PSH75AB10) provide 24V AC power for thermostats, relays, and zone valves.
Lighting contactor panels — RIB power supplies (e.g., PSMN200A) step down 347V AC to 24V AC for lighting control relays and occupancy sensors.
Pump control panels — Enclosed Class 2 transformers (e.g., PSH200A) supply 24V AC to pump start relays and float switches in water/wastewater facilities.
Industrial automation — RIB current sensors and relays monitor and switch low-voltage control circuits in PLC-based systems.
Commercial building automation — Functional Devices power supplies (e.g., PSH100AB10-EXT2) provide isolated 24V AC power for building controllers and actuators.
Data center cooling — RIB transformers (e.g., PSH300A) power control circuits for CRAC units and economizer dampers.
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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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