Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

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 50 VA power rating, designed for foot mounting. It converts a 120V AC input to a 24V AC output, featuring wire lead connections…

SKU 3G-OTH-48100

Brand
FUNCTIONAL DEVICES INC / RIB
Item
Open Class 2 Transformer
Category
Open Class 2 Transformers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
TR50VA001US
Type
Primary Fuse
AC
120V
Mounting
Foot
Input Voltage
120V AC
Output Voltage
24V AC
Connection - Primary
Wire Lead
Connection - Secondary
Wire Lead

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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 50 VA power rating, designed for foot mounting. It converts a 120V AC input to a 24V AC output, featuring wire lead connections on both the primary and secondary sides, and includes a primary fuse (MPN TR50VA001US).

Frequently Asked Questions

What is the FUNCTIONAL DEVICES INC / RIB TR50VA001US Class 2 Transformer used for?

This open-style Class 2 transformer is used to step down 120V AC input to 24V AC output for powering low-voltage control circuits, relays, and automation equipment in commercial and industrial building systems.

What are the specifications of the FUNCTIONAL DEVICES INC / RIB TR50VA001US transformer?

The TR50VA001US is a 50 VA open Class 2 transformer with foot mounting, 120V AC input, 24V AC output, and wire lead connections on both primary and secondary sides. It includes a primary fuse for protection.

Where to buy the FUNCTIONAL DEVICES INC / RIB TR50VA001US transformer worldwide?

3G Electric supplies the FUNCTIONAL DEVICES INC / RIB TR50VA001US transformer worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for availability and lead time.

How to install the FUNCTIONAL DEVICES INC / RIB TR50VA001US transformer?

Mount the transformer securely using the foot bracket. Connect the primary wire leads to a 120V AC supply and the secondary leads to your 24V AC load. Ensure the primary fuse is properly rated. Follow local electrical codes.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 96 VA Power Rating, 120V AC, 24V AC, Foot/Hub (MPN TR100VA001US)
FUNCTIONAL DEVICES INC / RIB
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 96 VA Power Rating, 120V AC, 24V AC, Foot/Hub (MPN TR100VA001US)
Open Class 2 transformer with 120V AC input and 24V AC output, rated 50 VA. Features dual hub mounting, wire lead connections on primary and secondary sides, and includes a primary fuse for overcurrent protection. Used to step down line voltage for low-voltage control circuits, relays, and automation equipment
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 120V AC input and 24V AC output, rated 50 VA. Features dual hub mounting, wire lead connections on primary and secondary sides, and includes a primary fuse for overcurrent protection. Used to step down line voltage for low-voltage control circuits, relays, and automation equipment
Open-style Class 2 transformer with 50 VA rating. Accepts 120V AC input and delivers 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Suitable for powering control circuits in HVAC, lighting, and building automation systems
FUNCTIONAL DEVICES INC / RIB
Open-style Class 2 transformer with 50 VA rating. Accepts 120V AC input and delivers 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Suitable for powering control circuits in HVAC, lighting, and building automation systems
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 50 VA Power Rating, 120V AC, 24V AC, Foot/Hub (MPN TR50VA005)
FUNCTIONAL DEVICES INC / RIB
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 50 VA Power Rating, 120V AC, 24V AC, Foot/Hub (MPN TR50VA005)
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 96 VA Power Rating, 120V AC, 24V AC, Dual Hub/Foot (MPN TR100VA002)
FUNCTIONAL DEVICES INC / RIB
FUNCTIONAL DEVICES INC / RIB Class 2 Transformer: 96 VA Power Rating, 120V AC, 24V AC, Dual Hub/Foot (MPN TR100VA002)
Open-style Class 2 transformer with 50 VA rating, 120V AC input, and 24V AC output. Features foot mounting, wire lead connections on primary and secondary sides, and an integrated circuit breaker for overcurrent protection. Suitable for powering HVAC controls, relays, and building automation systems in control panels
FUNCTIONAL DEVICES INC / RIB
Open-style Class 2 transformer with 50 VA rating, 120V AC input, and 24V AC output. Features foot mounting, wire lead connections on primary and secondary sides, and an integrated circuit breaker for overcurrent protection. Suitable for powering HVAC controls, relays, and building automation systems in control panels

More from FUNCTIONAL DEVICES INC / RIB

View all FUNCTIONAL DEVICES INC / RIB parts
Open Class 2 transformer with 20 VA rating, 120V AC primary input, and 24V AC secondary output. Features wire lead connections on both sides and hub mounting for installation in control panels or enclosures. Suitable for stepping down voltage to power low-voltage control devices in industrial and HVAC applications
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 20 VA rating, 120V AC primary input, and 24V AC secondary output. Features wire lead connections on both sides and hub mounting for installation in control panels or enclosures. Suitable for stepping down voltage to power low-voltage control devices in industrial and HVAC applications
Open Class 2 transformer with 40 VA rating, 240V AC input, and 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Suitable for stepping down voltage for low-voltage control circuits, relays, and automation equipment in commercial and industrial settings
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 40 VA rating, 240V AC input, and 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Suitable for stepping down voltage for low-voltage control circuits, relays, and automation equipment in commercial and industrial settings
Open Class 2 transformer with 20 VA rating, 24V AC input and 24V AC output. Features wire lead connections on both primary and secondary sides. Designed for hub mounting. Suitable for supplying low-voltage power to control circuits in various applications
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 20 VA rating, 24V AC input and 24V AC output. Features wire lead connections on both primary and secondary sides. Designed for hub mounting. Suitable for supplying low-voltage power to control circuits in various applications
Open Class 2 transformer with 75 VA rating, 480V AC primary input, and 24V AC secondary output. Features foot mounting, wire lead connections on both sides, and an integrated circuit breaker for overcurrent protection. Suitable for powering control circuits, relays, and automation devices in HVAC, lighting, and building management systems
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 75 VA rating, 480V AC primary input, and 24V AC secondary output. Features foot mounting, wire lead connections on both sides, and an integrated circuit breaker for overcurrent protection. Suitable for powering control circuits, relays, and automation devices in HVAC, lighting, and building management systems
Open-style Class 2 transformer with 50 VA capacity. Steps down 277V AC input to 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Used for powering low-voltage control circuits, relays, and automation devices in commercial and industrial applications
FUNCTIONAL DEVICES INC / RIB
Open-style Class 2 transformer with 50 VA capacity. Steps down 277V AC input to 24V AC output. Features foot mounting and wire lead connections on both primary and secondary sides. Used for powering low-voltage control circuits, relays, and automation devices in commercial and industrial applications
Open Class 2 transformer with 50 VA rating, 120V AC primary input and 24V AC secondary output. Features wire lead connections on both primary and secondary sides. Foot/hub mounting configuration. Suitable for general-purpose step-down applications in control panels and automation systems
FUNCTIONAL DEVICES INC / RIB
Open Class 2 transformer with 50 VA rating, 120V AC primary input and 24V AC secondary output. Features wire lead connections on both primary and secondary sides. Foot/hub mounting configuration. Suitable for general-purpose step-down applications in control panels and automation systems
Open-style Class 2 transformer with 120V AC primary and 24V AC secondary, rated 96 VA. Features hub mounting, wire lead connections on both sides, and an integrated circuit breaker. Suitable for low-voltage power distribution in HVAC, lighting, and industrial control applications
FUNCTIONAL DEVICES INC / RIB
Open-style Class 2 transformer with 120V AC primary and 24V AC secondary, rated 96 VA. Features hub mounting, wire lead connections on both sides, and an integrated circuit breaker. Suitable for low-voltage power distribution in HVAC, lighting, and industrial control applications
Open-style Class 2 transformer with 50 VA rating. Features foot mounting, 120V AC input, 24V AC output, and wire lead connections on both primary and secondary sides. Suitable for stepping down line voltage to low-voltage power for control circuits in HVAC, lighting, and building automation systems
FUNCTIONAL DEVICES INC / RIB
Open-style Class 2 transformer with 50 VA rating. Features foot mounting, 120V AC input, 24V AC output, and wire lead connections on both primary and secondary sides. Suitable for stepping down line voltage to low-voltage power for control circuits in HVAC, lighting, and building automation systems