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Current Transformers and Voltage Taps

Anywhere high currents are measured and processed, WAGO's current transformers are your first choice. Voltage taps also easily and safely tap the measurement voltage in existing systems.

Your benefits:

  • Safe, secure wiring with CAGE CLAMP® Connection Technology
  • Full range of products for new systems, as well as for retrofitting existing installations
  • Coordinated components for your energy data management

Product Overview

Rogowski Coils

WAGO's 855 Series Rogowski Coils feature a closed-air coil with a non-magnetic split core and reliably convert AC currents.


  • Reduced footprint – ideal for measuring high currents via split core
  • Easy to use via bayonet lock and anchor points for cable ties
  • Higher security via sealable bayonet lock
  • Direct connection of Rogowski coils to the 3-phase power measurement module (750-495/000-002)
  • Ready for worldwide use in many industries, thanks to UL listing

Plug-In Current Transformers with picoMAX® Connection Technology

  • Easy secondary cable installation via pluggable picoMAX® Connection Technology
  • Space-saving assembly directly above the circuit breaker, thanks to side latches for optimum serial mounting
  • UL listed

Split-Core Current Transformers

  • Compact split-core current transformers – ideal for retrofitting existing systems
  • No current path interruption
  • Easy and cost-effective installation via cable ties
  • Transformer leg (855-5xxx) can be completely removed if space is tight

Plug-In Current Transformers with CAGE CLAMP® Connection Technology

  • Screwless CAGE CLAMP® Connection Technology
  • Quick-mount kit for easy and cost-effective installation
  • Tremendous versatility thanks to several mounting options
  • Easy transformer short-circuiting via redundant secondary terminals S1 and S2
  • UL listed

Voltage Taps for Insulated Conductors

WAGO’s 855 Series Voltage Taps easily and safely tap the measurement voltage in existing systems. Conductor contact is made via IDC connection for fast voltage tap-off.

The Benefits for You:

  • Safely tap the measurement voltage in no time
  • Tool-free insulation displacement connection (IDC) guarantees secure installation
  • 2 A 5 x 25 mm fuse possible
  • For insulated conductors up to 16 mm2 (6 AWG)

Voltage Taps for Busbars

The Benefits for You:

  • Fast, easy installation on a live busbar with clamp mount or M6/M8 mounting
  • Various marking options for clear identification
  • Universal conductor termination via Push-in CAGE CLAMP® connection technology
  • Fused voltage path protects downstream measurement devices

Current and Voltage Tap

A combination of current transformer and voltage tap, the current and voltage tap can be quickly and easily mounted in the jumper slot of the 95 mm2 (4/0 AWG) high-current through terminal block (285-195).

The Benefits for You:

  • Power data can be directly tapped on the power supply
  • Integrated 250 A/1 A current transformer
  • Complies with accuracy class 0.5 per EN 61869-2 for exact measurement results
  • Fused voltage path protects downstream measurement devices

3-Phase Power Measurement Modules

The power measurement modules in a DIN-rail mounting enclosure offer the ideal solution for measuring currents and voltages in a three-phase supply network remotely from the control level.

Your Benefits:

  • Various device variants for optional connection of current transformers or Rogowski coils
  • Slot for microSD cards for storing measurement data
  • Compact DIN-rail-mount enclosure
  • Communication via Modbus RTU and pulse output

Current/Voltage Signal Conditioners and Power Measurement Modules

Besides current and voltage signal conditioners which record DC and AC currents and voltages, this impressive range also includes a power measurement module that can measure current and voltage in parallel, convert them to power and output them as an analog standard signal.

Your Benefits:

  • Measure DC or AC voltages up to 300 V in a width of just 6 mm
  • Common the supply voltage via jumpers that can be used across the entire range
  • Versatile configuration

Plug-In Current Transformers for Billing Measurement

Plug-In Current Transformer for Billing Measurement

Plug-in current transformers for billing measurements are inductive, single-conductor current transformers. Due to the measurement principle used, these current transformers are exclusively designed for AC network applications.

These plug-in current transformers comply with the conformity assessment procedure (module D) and can be used for billing.

Your Benefits:

  • Readily combinable with the energy meter with transformer connections
  • Screwless CAGE CLAMP® connection technology
  • Approved for billing purposes

All Products

Discover the wide range of WAGO's current transformers and voltage taps.


Inspiration for You

Current Measurement and Analysis

WAGO’s Solution for Energy Monitoring and Conservation

Compact Transformer Terminal Blocks

Pre-assembled terminal block assembly for easy connection and short-circuiting of current transformers, suitable for 3-phase power measurement modules


Compact Transformer Terminal Blocks

The simple solution to reliably short-circuit current transformers that are not directly wired to a load; also available for 3-phase circuits

Energy Management

Identify and Exploit Potential

Saving energy benefits both the environment and society. Performing the right analysis and taking the right steps can lead to sustainable profit. WAGO is your partner for effective energy management.