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Signal Transformer / Bel DU & SU Step-Up or Step-Down Transformers

Signal Transformer / Bel DU and SU Industrial Grade Step-Up or Step-Down Transformers allow users to adapt voltages for worldwide applications. The transformers are designed to provide a multitude of step-up or step-down voltage configurations to accommodate various input voltages. The series has a power rating of 250VA to 10kVA and a 2500Vrms hipot dielectric strength. Signal Transformer / Bel DU and SU Transformers feature plated brass screw-type terminals and can be chassis or rack-mounted.

Features

  • Plated brass screw-type terminals
  • Higher insulation classes available
  • Easily modified
  • Adaptable voltage range
  • Chassis or rack mount

Specifications

  • Dual/tapped primaries
    • Parallel connected (104V, 110V, 120V/50-500Hz)
    • Series connected (208V, 220V, 230V, 240V)
  • Dual/tapped secondaries
    • DU series
      • Parallel connected (104V, 110V, 120V/50-500Hz)
      • Series connected (208V, 220V, 230V, 240V/50-500Hz)
    • SU series
      • Parallel connected (208V, 220V, 240V/50-500Hz)
      • Series connected (416V, 440V, 460V, 480V/50-500Hz)
  • Power
    • 250VA to 10kVA
    • 500VA to 20kVA possible if used as auto-transformer
  • 2500Vrms hipot dielectric strength
  • Class B, 130°C insulation system
  • DU-1, DU-2, and DU-3 are UL 5085-1, UL 5085-2 for construction, spacing, and insulation system
  • RoHS and REACH compliant

DU Transformer

Signal Transformer / Bel DU & SU Step-Up or Step-Down Transformers

SU Transformer

Signal Transformer / Bel DU & SU Step-Up or Step-Down Transformers
Inilathala: 2020-02-10 | Na-update: 2026-04-09