Power Supplies

RIB TR Series

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RIB TR Series

Functional Devices Control Transformers RIB TR Series

Functional Devices Control Transformers


The RIB TR Series offers a complete line of control transformers for use in building automation and temperature control systems. The series includes transformer VA ratings from 20 VA up through 375 VA and primary voltages of 120, 208, 240, 277, and 480 VAC. Isolation transformers for 24 VAC circuits are also included. All RIB TR Series transformers are UL listed and feature split-bobbin construction. Some also have a secondary circuit breaker.


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QtyModelDescriptionIn StockList PriceInternet Price
TR100VA001 TRANSFORMER 120:24 VAC 100 VA In Stock63.6350.90
TR100VA001-10PK XFMR 120:24 VAC 100 VA 10-PACK In Stock546.00436.80
TR100VA001-5PK XFMR 120:24 VAC 100 VA 5-PACK In Stock287.00229.60
TR100VA002 TRANSFORMER 120:24 VAC 100VA In Stock61.6849.34
TR100VA002-10PK XFMR 120:24 VAC 100VA 10-PACK In Stock529.00423.20
TR100VA002-20 XFMR 100VA,120-24V,2 HUB, INFO58.5846.86
TR100VA002-5PK XFMR 120:24 VAC 100VA 5-PACK In Stock278.00222.40
TR100VA002-20-10PK XFMR 100VA,120-24V,2 HUB/10-PACK INFO502.00401.60
TR100VA002-20-5PK XFMR 100VA,120-24V,2 HUB/5-PACK INFO264.00211.20
TR100VA004 XFMR 120/277/240/480:24VAC 100 In Stock70.3556.28
TR100VA004-10PK XFMR 120/277/240/480:24VAC 100 10-PACK In Stock603.00482.40
TR100VA004-5PK XFMR 120/277/240/480:24VAC 100 5-PACK In Stock317.00253.60
TR100VA005 TRANSFORMER 120/240/277-24VAC 100VA In Stock79.7963.83
TR100VA005-10PK XFMR 120/240/277-24VAC 100VA 10-PACK In Stock684.00547.20
TR100VA005-5PK XFMR 120/240/277-24VAC 100VA 5-PACK In Stock360.00288.00
TR100VA008 TRANSFORMER 208/240/277-120VAC 100VA In Stock81.8165.45
TR100VA008-10PK XFMR 208/240/277-120VAC 100VA 10-PACK In Stock702.00561.60
TR100VA008-5PK XFMR 208/240/277-120VAC 100VA 5-PACK In Stock369.00295.20
TR100VA015 TRFMR 100VA; 120/208/240/277/480-24V CIRCUIT BRKER In Stock77.6962.15
TR100VA015-10PK XFMR 100VA; 120/208/240/277/480-24V CIR BRKR-10PK In Stock665.00532.00
TR100VA015-5PK XFMR 100VA; 120/208/240/277/480-24V CIR BRKER 5PK In Stock350.00280.00
TR150VA001 TRANSFORMER 120:24 VAC 150 VA In Stock85.8568.68
TR150VA001-10PK XFMR 120:24 VAC 150 VA 10-PACK In Stock736.00588.80
TR150VA001-5PK XFMR 120:24 VAC 150 VA 5-PACK In Stock387.00309.60
TR150VA002 TRANSFORMER 120:24 150VA 2 THREADED HUBS In Stock99.9979.99
TR150VA002-10PK XFMR 120:24 150VA 2 THREADED HUBS 10-PACK In Stock855.00684.00
TR150VA002-5PK XFMR 120:24 150VA 2 THREADED HUBS 5-PACK In Stock450.00360.00
TR150VA008 XFMR 480/277/240/208 120VAC 150VA; 2 THREADED HUBS In Stock90.9072.72
TR150VA008-10PK XFMR 480/277/240/208 120VAC 150VA; 2 THUBS 10-PACK In Stock779.00623.20
TR150VA008-5PK XFMR 480/277/240/208 120VAC 150VA; 2 THUBS 5-PACK In Stock410.00328.00
TR175VA001 XFMR 208/240:24 VAC 175 VA In Stock104.0383.22
TR175VA001-10PK XFMR 208/240:24 VAC 175 VA 10-PACK In Stock892.00713.60
TR175VA001-5PK XFMR 208/240:24 VAC 175 VA 5-PACK In Stock469.00375.20
TR175VA002 TRANSFORMER 120:24 VAC 175 VA In Stock91.9173.53
TR175VA002-10PK XFMR 120:24 VAC 175 VA 10-PACK In Stock787.00629.60
TR175VA002-5PK XFMR 120:24 VAC 175 VA 5-PACK In Stock414.00331.20
TR175VA003 XFMR 175VA, 120-24V, SNGL HUB, UL LISTED US/CANADA INFO78.7863.02
TR175VA003-10PK XFMR 175VA/120-24V/SNGL HUB/CUL LISTED 10-PACK INFO675.00540.00
TR175VA003-5PK XFMR 175VA/120-24V/SNGL HUB/CUL LISTED 5-PACK INFO355.00284.00
TR20VA001 TRANSFORMER 120:24 VAC 20 VA In Stock23.2318.58
TR20VA001-10PK XFMR 120:24 VAC 20 VA 10-PACK In Stock200.00160.00
TR20VA001-5PK XFMR 120:24 VAC 20 VA 5-PACK In Stock105.0084.00
TR20VA002 TRANSFORMER, 208:24VAC, 20VA In Stock23.2318.58
TR20VA002-10PK XFMR 208:24VAC/20VA 10-PACK In Stock200.00160.00
TR20VA002-5PK XFMR 208:24VAC/20VA 5-PACK In Stock105.0084.00
TR20VA003 TRANSFORMER 24:24 VAC 20 VA In Stock24.2419.39
TR20VA003-10PK XFMR 24:24 VAC 20 VA 10-PACK In Stock209.00167.20
TR20VA003-5PK XFMR 24:24 VAC 20 VA 5-PACK In Stock110.0088.00
TR20VA004 20VA, 277/240/208/120-24V,2 HUB, INHERENT LIMIT In Stock31.3125.05
TR20VA004-10PK XFMR 20VA/277/240/208/120-24V/2HUB/INHLIMIT 10PACK In Stock268.00214.40
TR20VA004-5PK XFMR 20VA/277/240/208/120-24V/2HUB/INHLIMIT 5-PACK In Stock141.00112.80
TR20VA007 TRANSFORMER 277:24 VAC 20 VA In Stock23.2318.58
TR20VA007-10PK XFMR 277:24 VAC 20 VA 10-PACK In Stock200.00160.00
TR20VA007-5PK XFMR 277:24 VAC 20 VA 5-PACK In Stock105.0084.00
TR240VA001 TRANSFORMER 120:24 VAC 240 VA In Stock116.6593.32
TR240VA001-10PK XFMR 120:24 VAC 240 VA 10-PACK In Stock998.00798.40
TR240VA001-5PK XFMR 120:24 VAC 240 VA 5-PACK In Stock525.00420.00
TR300VA002 TRANSFORMER, 120/208/240/480:24VAC, 300VA In Stock147.27117.82
TR300VA002-10PK XFMR 120/208/240/480:24VAC/300VA 10-PACK In Stock1,260.001,008.00
TR300VA002-5PK XFMR 120/208/240/480:24VAC/300VA 5-PACK In Stock663.00530.40
TR375VA001 TRANSFORMER 120:24 VAC 375 VA In Stock137.39109.91
TR375VA001-10PK XFMR 120:24 VAC 375 VA 10-PACK In Stock1,177.00941.60
TR375VA001-5PK XFMR 120:24 VAC 375 VA 5-PACK In Stock619.00495.20
TR40VA001 TRANSFORMER 120:24 VAC 40 VA In Stock26.2320.98
TR40VA001-10PK XFMR 120:24 VAC 40 VA 10-PACK In Stock227.00181.60
TR40VA001-5PK XFMR 120:24 VAC 40 VA 5-PACK In Stock119.0095.20
TR40VA002 TRANSFORMER 120:24 VAC 40 VA In Stock28.2822.62
TR40VA002-10PK XFMR 120:24 VAC 40 VA 10-PACK In Stock244.00195.20
TR40VA002-5PK XFMR 120:24 VAC 40 VA 5-PACK In Stock128.00102.40
TR40VA003 TRANSFORMER 24:24 VAC 40 VA In Stock31.3125.05
TR40VA003-10PK XFMR 24:24 VAC 40 VA 10-PACK In Stock268.00214.40
TR40VA003-5PK XFMR 24:24 VAC 40 VA 5-PACK In Stock141.00112.80
TR40VA004 TRANSFORMER, 120/208/240/277:24VAC, 40VA In Stock29.0723.26
TR40VA004-10PK XFMR 120/208/240/277:24VAC/40VA 10-PACK In Stock249.00199.20
TR40VA004-5PK XFMR 120/208/240/277:24VAC/40VA 5-PACK In Stock131.00104.80
TR40VA013 XFMR 40VA, 208/240/277/480-120VAC, In Stock46.4637.17
TR40VA013-10PK XFMR 40VA/208/240/277/480-120VAC/10-PACK In Stock399.00319.20
TR40VA013-5PK XFMR 40VA/208/240/277/480-120VAC/5-PACK In Stock210.00168.00
TR40VA015 TRANSFORMER, 120/208/240:24VAC, 40VA In Stock30.3124.25
TR40VA015-10PK XFMR 120/208/240:24VAC/40VA 10-PACK In Stock261.00208.80
TR40VA015-5PK XFMR 120/208/240:24VAC/40VA 5-PACK In Stock137.00109.60
TR40VA022 XFMR 40VA, 120-24V INFO22.7118.17
TR40VA022-10PK XFMR 40VA/120-24V 10-PACK INFO196.00156.80
TR40VA022-5PK XFMR 40VA/120-24V 5-PACK INFO103.0082.40
TR40VA040 TRANSFORMER, 120/208/240:24VAC, 40VA, SEC TERMS In Stock30.3524.28
TR40VA040-10PK XFMR 120/208/240:24VAC/40VA/SEC TERMS 10-PACK In Stock261.00208.80
TR40VA040-5PK XFMR 120/208/240:24VAC/40VA/SEC TERMS 5-PACK In Stock137.00109.60
TR50VA001 TRANSFORMER 120:24 VAC 50 VA In Stock33.3326.66
TR50VA001-10PK XFMR 120:24 VAC 50 VA 10-PACK In Stock285.00228.00
TR50VA001-5PK XFMR 120:24 VAC 50 VA 5-PACK In Stock150.00120.00
TR50VA002 TRANSFORMER 120:24 VAC 50 VA In Stock35.3528.28
TR50VA002-10PK XFMR 120:24 VAC 50 VA 10-PACK In Stock304.00243.20
TR50VA002-5PK XFMR 120:24 VAC 50 VA 5-PACK In Stock160.00128.00
TR50VA003 TRANSFORMER 208/240:24VAC 50VA In Stock34.3427.47
TR50VA003-10PK XFMR 208/240:24VAC 50VA 10-PACK In Stock295.00236.00
TR50VA003-5PK XFMR 208/240:24VAC 50VA 5-PACK In Stock155.00124.00
TR50VA004 XFMR 480/277/240/120:24VAC 50V In Stock50.0340.02
TR50VA004-10PK XFMR 480/277/240/120:24VAC 50V 10-PACK In Stock430.00344.00
TR50VA004-5PK XFMR 480/277/240/120:24VAC 50V 5-PACK In Stock226.00180.80
TR50VA005 TRANSFORMER 120:24 VAC 50 VA In Stock39.9631.97
TR50VA005-10PK XFMR 120:24 VAC 50 VA 10-PACK In Stock342.00273.60
TR50VA005-5PK XFMR 120:24 VAC 50 VA 5-PACK In Stock180.00144.00
TR50VA006 TRANSFORMER 277:24 VAC 50VA In Stock44.4435.55
TR50VA006-10PK XFMR 277:24 VAC 50VA 10-PACK In Stock380.00304.00
TR50VA006-5PK XFMR 277:24 VAC 50VA 5-PACK In Stock200.00160.00
TR50VA007 TRANSFORMER 277:24 VAC 50 VA INFO46.4637.17
TR50VA007-10PK XFMR 277:24 VAC 50 VA 10-PACK INFO399.00319.20
TR50VA007-5PK XFMR 277:24 VAC 50 VA 5-PACK INFO210.00168.00
TR50VA009 TRANSFORMER 120/208/240:24VAC, 50VA, CLASS 2 In Stock47.2337.79
TR50VA009-10PK XFMR 120/208/240:24VAC/50VA/CLASS 2 10-PACK In Stock405.00324.00
TR50VA009-5PK XFMR 120/208/240:24VAC/50VA/CLASS 2 5-PACK In Stock213.00170.40
TR50VA014 TRANSFORMER, 277:24VAC, 50VA, CLASS 2 In Stock42.7934.23
TR50VA014-10PK XFMR 277:24VAC/50VA/CLASS 2 10-PACK In Stock367.00293.60
TR50VA014-5PK XFMR 277:24VAC/50VA/CLASS 2 5-PACK In Stock193.00154.40
TR50VA015 XFMR, 120/208/240/277/480:24VAC, 50VA, CLASS 2 In Stock50.7340.59
TR50VA015-10PK XFMR 120/208/240/277/480:24VAC/50VA/CLASS 2 10PACK In Stock436.00348.80
TR50VA015-5PK XFMR 120/208/240/277/480:24VAC/50VA/CLASS 2 5-PACK In Stock229.00183.20
TR50VA016 TRANSFORMER, 120/208/240:24VAC, 50VA, CLASS 2 INFO47.4837.98
TR50VA016-10PK XFMR 120/208/240:24VAC/50VA/CLASS 2 10-PACK INFO407.00325.60
TR50VA016-5PK XFMR 120/208/240:24VAC/50VA/CLASS 2 5-PACK INFO214.00171.20
TR50VA017 TRANSFORMER, 208/277/480:24VAC, 50VA, CLASS 2 In Stock51.5141.21
TR50VA017-10PK XFMR 208/277/480:24VAC/50VA/CLASS 2 10-PACK In Stock441.00352.80
TR50VA017-5PK XFMR 208/277/480:24VAC/50VA/CLASS 2 5-PACK In Stock232.00185.60
TR50VA018 XFMR 50VA,480/277/240/208-120V INFO46.4637.17
TR50VA018-10PK XFMR 50VA,480/277/240/208-120V 10-PACK INFO399.00319.20
TR50VA018-5PK XFMR 50VA,480/277/240/208-120V 5-PACK INFO210.00168.00
TR50VA019 XFRMR 50VA,277/120V-24,PLAST ENDBELLS INFO29.2923.43
TR50VA019-10PK XFMR 50VA,277/120V-24,PLAST ENDBELLS 10-PACK INFO251.00200.80
TR50VA019-5PK XFMR 50VA,277/120V-24,PLAST ENDBELLS 5-PACK INFO132.00105.60
TR75VA001 TRANSFORMER 120:24 VAC 75 VA In Stock54.8843.91
TR75VA001-10PK XFMR 120:24 VAC 75 VA 10-PACK In Stock470.00376.00
TR75VA001-5PK XFMR 120:24 VAC 75 VA 5-PACK In Stock247.00197.60
TR75VA002 TRANSFORMER 120:24 VAC 75 VA In Stock61.6149.29
TR75VA002-10PK XFMR 120:24 VAC 75 VA 10-PACK In Stock529.00423.20
TR75VA002-5PK XFMR 120:24 VAC 75 VA 5-PACK In Stock278.00222.40
TR75VA003 TRANSFORMER, 277:24VAC, 75VA, CLASS 2 In Stock63.6350.90
TR75VA003-10PK XFMR 277:24VAC/75VA/CLASS 2 10-PACK In Stock546.00436.80
TR75VA003-5PK XFMR 277:24VAC/75VA/CLASS 2 5-PACK In Stock287.00229.60
TR75VA004 XFMR 120/208/240/480:24VAC 75V In Stock65.6552.52
TR75VA004-10PK XFMR 120/208/240/480:24VAC 75V 10-PACK In Stock563.00450.40
TR75VA004-5PK XFMR 120/208/240/480:24VAC 75V 5-PACK In Stock296.00236.80
TR75VA005 TRANSFORMER 120/208/240/480:24VAC, 75VA, CLASS 2 In Stock60.7948.63
TR75VA005-10PK XFMR 120/208/240/480:24VAC/75VA/CLASS 2 10-PACK In Stock521.00416.80
TR75VA005-5PK XFMR 120/208/240/480:24VAC/75VA/CLASS 2 5-PACK In Stock274.00219.20
TR75VA007 XFMR 75VA, 120/208/240/480-24V INFO58.5846.86
TR75VA007-10PK XFMR 75VA/120/208/240/480-24V 10-PACK INFO502.00401.60
TR75VA007-5PK XFMR 75VA/120/208/240/480-24V 5-PACK INFO264.00211.20


No accessories found
  • Complete line of control transformers from 20 VA to 375 VA
  • Foot and hub mounting on most models
  • All models UL listed, many are Class 2 rated
  • Ambient temp -30° to 140℉ (0° to 60℃)
  • Color-coded wire leads
  • One year warranty

Secondary Voltage:24 VAC

Approvals:Class 2 UL1585 listed US/Canada, E197146