Power Transformers PROCESS CONTROL AC POWER TRANSFORMERS 20 VA to 150 VA, Single or Dual Hub, Circuit Breaker, UL Class 2 The Series APT AC Power Transformers provide isolated step-down to 24 VAC with models offering VA ratings of 20, 40, 50, 75, 96, or 150 VA’s. These cost efficient transformers are offered in single or dual 1/2˝ NPT threaded hub mounts with 8-1/2˝ 18 AWG wire leads, to meet the installation requirements of a variety of building automation and control panel applications in HVAC. All models are UL Class 2 listed. FEATURES/BENEFITS • Single or dual 1/2˝ NPT • Universal supply voltage input • With or without integral circuit breaker APPLICATIONS • BAS • HVAC D E A BC SPECIFICATIONS Input Voltage: See model chart. Input Frequency: 50/60 Hz. Output Voltage: See model chart. Output VA Rating: 20, 40, 50, 75, 96, or 150 VA. Mounting: Slotted foot mount with single, or dual 1/2˝ NPT hub. Current Protection: See model chart. Electrical Connections: Models ending in -20: 20˝ (508 mm) 18 AWG leads; All other models: 8.5˝ (210 mm) 18 AWG leads. Weight: See model chart. Agency Approvals: CE, cULus. Model Dimensions in [mm] ABCDE APT-20-0SN APT-20-1SN APT-40-3SN APT-40-5DN APT-50-5SB APT-50-5DB APT-75-5SB APT-75-5DB APT-100-5SB APT-100-5DB APT-150-1DB 1-31/64 (37.6) 1-31/64 (37.6) 1-61/64 (49.5) 1-61/64 (49.5) 1-13/16 (46.0) 1-13/16 (46.0) 2-13/64 (56.0) 2-13/64 (56.0) 2-39/64 (66.0) 2-39/64 (66.0) 2-33/64 (64.0) 1-21/32 (41.9) 1-21/32 (41.9) 1-25/32 (45.2) 1-25/32 (45.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-31/32 (50.2) 1-7/8 (47.5) 1-7/8 (47.5) 2-11/64 (55.0) 2-11/64 (55.0) 2-1/2 (63.5) 2-1/2 (63.5) 2-1/2 (63.5) 2-1/2 (63.5) 2-1/2 (63.5) 2-1/2 (63.5) 2-1/2 (63.5) 2-17/64 (57.4) 2-17/64 (57.4) 2-43/64(68.0) 2-3/4 (70.0) 3-7/16 (87.1) 3-7/16 (87.1) 3-53/64 (97.1) 3-53/64 (97.1) 4-1/4 (107.1) 4-1/4 (107.1) 3-9/16 (90.5) 2-39/64 (66.2) 2-39/64 (66.2) 2-7/8 (73.0) 2-7/8 (73.0) 3-1/32 (77.0) 3-1/32 (77.0) 3-1/32 (77.0) 3-1/32 (77.0) 3-1/32 (77.0) 3-1/32 (77.0) 3-1/32 (77.0) APT-40-3SN APT-50-5DB APT-50-5SB SERIES APT 120VAC24VAC WHITEBROWN BLUEBLACK 24VAC REDBLUE 24VAC REDBROWN 480VAC 24VAC GRAY BROWN BLACKBLUE 277VAC 240VAC 208VAC 120VAC COM YELLOW ORANGE RED WHITE 24VAC BROWN BLACKBLUE 277VAC 240VAC 208VAC 120VAC COM YELLOW ORANGE RED WHITE Diagram ADiagram BDiagram CDiagram D DWYER INSTRUMENTS, INC. | dwyer-inst.com360 MODEL CHART ModelRatingInput VoltageOutput VoltageMountingCurrent ProtectionWiringWeight APT-20-0SN APT-20-1SN APT-40-3SN APT-40-5DN APT-50-5SB APT-50-5DB APT-75-5SB APT-75-5DB APT-100-5SB APT-100-5DB APT-150-1DB 20 VA 20 VA 40 VA 40 VA 50 VA 50 VA 75 VA 75 VA 100 VA 100 VA 150 VA 24 VAC 120 VAC 120/208/240/277 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120/208/240/277/480 VAC 120 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC 24 VAC Foot mount with single hub Foot mount with single hub Foot mount with single hub Foot mount with dual hub Foot mount with single hub Foot mount with dual hub Foot mount with single hub Foot mount with dual hub Foot mount with single hub Foot mount with dual hub Foot mount with dual hub Inherent Inherent Internal fuse Internal fuse Button circuit breaker Button circuit breaker Button circuit breaker Button circuit breaker Button circuit breaker Button circuit breaker Button circuit breaker Diagram B Diagram A Diagram D Diagram C Diagram C Diagram C Diagram C Diagram C Diagram C Diagram C Diagram A 1.25 lb (0.57 kg) 1.29 lb (0.59 kg) 2.07 lb (0.94 kg) 2.29 lb (1.04 kg) 2.69 lb (1.22 kg) 2.73 lb (1.24 kg) 3.60 lb (1.63 kg) 3.62 lb (1.64 kg) 4.03 lb (1.83 kg) 4.05 lb (1.84 kg) 4.98 lb (2.26 kg)Next >