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Signal Transformer / Bel SLT Isolated 277V / 120V Step-Down Transformers

Signal Transformer / Bel SLT Isolated 277V / 120V Step-Down Transformers allow installers to derive a fully isolated 120V source from a 277V line. These transformers have approvals from UL, CSA, VDE, and IEC, and meet Class F insulation system (155°C) requirements. The touch-safe terminals (IP20 type) offer a screw / binding clamp for hard wiring as well as 3/16” and 1/4” fast-on connections. The SLT series offers power ratings of 300VA, 450VA, 600VA, and 1000VA. Ideal applications include power task lighting and service receptacles.

Features

  • Class F insulation system (155°C)
  • Touch-safe terminals (IP20 type) offer a screw / binding clamp for hard wiring and 3/16" and 1/4" fast-on connections
  • Meets UL, CSA, VDE, and IEC

Specifications

  • 300VA, 450VA, 600VA, and 1000VA power ratings
  • 4000V dielectric strength
  • <30µA leakage current
  • Primary: 277V, 60Hz
  • Secondary: 120V with taps at 115V and 125V for high/low line adjustment

Certifications

  • UL 1446 File #E66312
  • Compliant with these domestic and international standards:
    • UL 5085-1-2, UL 506, UL 60950, UL 197, UL 1262
    • IEC 60950, IEC 61558-2-4, IEC 61010-1
    • CSA 22.2 #66-1-2
    • VDE 0570, 0605, 0551, 0550
    • CE

Applications

  • Power task lighting
  • Service receptacles

Diagram

Signal Transformer / Bel SLT Isolated 277V / 120V Step-Down Transformers
Published: 2020-02-14 | Updated: 2022-03-11