Class 2 Transformers
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FUNCTIONAL DEVICES INC / RIB Class 2 Transformers

Widely used in limited power control or signalling applications such as doorbell transformers, motor actuators and ignition systems. Foot and / or hub mounted transformers ranging from 20 to 375 V and are available with single or dual threaded hubs. UL listed / UL recognised component provided with circuit breaker and pigtail wires

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Functional Devices Class 2 transformers convert high-voltage electricity to low-voltage electricity. They are useful in electronics, lighting and power distribution systems. They can provide a...Read more
FUNCTIONAL DEVICES INC / RIB -

Class 2 Transformers with Automatic Short Circuit Protection

StyleModelDepthEnclosure RatingEnclosure TypeHeightInput VoltageMountingVa RatingWidthPrice (ex. VAT)
ATR20VA0011.88"Not RatedIndoor2.63"120 VACFoot or 1/2" NPT Hub202.13"€20.06
BTR20VA0071.88"Not RatedIndoor2.63"277 VACFoot or 1/2" NPT Hub202.13"€16.90
CTR20VA0031.88"Not RatedIndoor2.63"24 VACFoot or 1/2" NPT Hub202.13"€17.89
DTR20VA0041.89"Not RatedIndoor2.62"120/208/240/277 VACFoot or Dual 1/2" NPT Hub202.31"€24.24
ETR20VA0021.902"Not RatedIndoor2.616"208 VACFoot or Dual 1/2" NPT Hub202.296"€18.03
FTR40VA0032.19"Not RatedIndoor2.88"24 VACFoot or 1/2" NPT Hub402.69"€22.23
GTR40VA0012.19"Not RatedIndoor2.88"120 VACFoot or 1/2" NPT Hub402.69"€23.42
HTR40VA0152.19"Not RatedIndoor2.88"120/208/240 VACFoot or 1/2" NPT Hub402.69"€30.19
ITR40VA0042.19"Not RatedIndoor2.88"120/208/240/277 VACFoot or Dual 1/2" NPT Hub402.69"€28.50
JTR40VA0402.171"Not RatedIndoor2.89"120/208/240 VACFoot or 1/2" NPT Hub402.728"€25.33
KTR40VA0022.177"Not RatedIndoor2.886"120 VACFoot or Dual 1/2" NPT Hub402.634"€24.61
LPSH40AB104.5"Nema 1Enclosed4.5"120 VACMulti405.43"€119.29
MPSH40AB10-EXT24.5"Nema 1Enclosed4.5"120 VACMulti405.43"€151.78
NPSH100A100AB104.5"Nema 1Enclosed4.5"120 VACMulti1008.62"€239.81
OPSH200A4.5"Nema 1Enclosed4.5"120/240/277/347/480 VACMulti405.44"€495.66
PTR40VA001US4.25"Not RatedIndoor3.25"120 VACFoot or 1/2" NPT Hub402.5"€33.57
FUNCTIONAL DEVICES INC / RIB -

Class 2 Transformers with Secondary Circuit Protection

StyleModelDepthEnclosure RatingEnclosure TypeHeightInput VoltageItemMountingOutput VoltagePrice (ex. VAT)
ATR75VA004-----Class 2 Transformer1 Threaded, 1 Side Opening-€97.53
BTR50VA027-----Class 2 TransformerFoot & Single Threaded Hubs-€37.78
RFQ
CTR100VA026-----Class 2 TransformerFoot & Dual Threaded Hubs-€47.42
RFQ
DTR150VA001-28-----Class 2 Transformer--€62.26
RFQ
ETR40VA002US----120 VACClass 2 Transformer--€35.02
FTR100VA002-20-----Class 2 TransformerFoot & Dual Threaded Hubs-€46.03
RFQ
DTR100VA001-28-----Class 2 Transformer--€45.47
RFQ
GTR100VA009----480/277/240/208/120 VACClass 2 Transformer--€53.19
HTR100VA009US----480/277/240/208/120 VACClass 2 Transformer--€86.37
DTR50VA005-28-----Class 2 Transformer--€34.97
RFQ
ITR100VA027-----Class 2 TransformerFoot & Dual Threaded Hubs-€48.79
RFQ
JTR50VA022US----480/277/240/208/120 VACClass 2 Transformer--€68.87
DTR75VA001-28-----Class 2 Transformer--€42.04
RFQ
KTR100VA015----480/277/240/208/120 VACClass 2 Transformer--€60.90
LTR75VA0052.5"Not RatedIndoor3.03"120/208/240/480 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€48.71
MTR50VA0142.5"Not RatedIndoor3.06"277 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€34.68
NTR75VA0012.5"Not RatedIndoor3"120 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€43.96
OTR50VA0152.5"Not RatedIndoor3.06"120/208/240/277/480 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€38.81
PTR100VA0012.5"Not RatedIndoor3.03"120 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€47.46
QTR50VA0052.5"Not RatedIndoor3"120 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€33.52
RTR100VA0052.51"Not RatedIndoor3.03"120/240/277/480 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€58.44
STR50VA0182.52"-Indoor3.48"208/240/277/480 VACControl TransformerFoot or 1/2" NPT Hub120 VAC€42.49
TTR50VA0192.175"Not RatedIndoor2.896"120/277 VACClass 2 TransformerFoot24 VAC€23.80
UTR50VA0012.178"Not RatedIndoor2.879"120 VACClass 2 TransformerFoot or 1/2" NPT Hub24 VAC€23.69
VTR50VA0022.181"Not RatedIndoor2.908"120 VACClass 2 TransformerFoot or Dual 1/2" NPT Hub24 VAC€30.33

Features

  • Functional Devices Class 2 transformers feature split-bobbin construction for superior isolation and low capacitive coupling.
  • They have foot and single / dual-threaded hubs for easy mounting.
  • These transformers operate at temperatures ranging from -30 to 140 degrees F.
  • Some Functional Devices RIB transformers are equipped with circuit breakers for overload protection.

Working Mechanism

  • Functional Devices Class 2 transformer operates on the fundamental principles of electromagnetic induction.
  • When alternating current (AC) flows through the primary winding of the transformer, it creates a magnetic field around it.
  • This magnetic field then induces a voltage in the secondary winding of the transformer, which is connected to the load or electronic device.
  • The transformer supplies a limited amount of power to the connected device.
  • This restriction prevents excessive voltage that could pose a risk of electrical shock.

Standards and Approvals

  • CE
  • RoHS
  • UL

Frequently Asked Questions

What distinguishes Class 2 transformers in terms of safety?

The distinctive feature of Class 2 transformers is their ability to provide a secure power source by ensuring that the output voltage remains within a predefined and safe range, thereby preventing electrical shock and safeguarding sensitive equipment.

How do Class 2 transformers contribute to operational efficiency?

Class 2 transformers contribute to operational efficiency by adapting to the specific power requirements of connected devices, minimising energy consumption and reducing wastage.

How do I choose the right Fundamental Devices RIB transformer for my specific application?

Choosing the right transformer involves considering factors, such as the power requirements of your devices, the voltage specifications of the transformer and any specific features needed for your application.

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