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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

New Product

Easy Installation and Configuration

New Compact Energy Meters with Large Displays

Comprehensive energy measurement is necessary for optimizing energy consumption. WAGO’s portfolio now has new energy meters that simplify this task while offering several key advantages. They use Push-in CAGE CLAMP® with levers, allowing them to connect very quickly and easily. The devices have a width of just 72 mm for direct measurement; versions for current transformers are even slimmer at only 35 mm. These widths save a tremendous amount of control cabinet space.

In addition to the values for active and reactive energy, the energy meters also record the mains frequency, as well as current, voltage and power for all phases. The user can see all these energy characteristics at a glance on a large illuminated display. The new energy meters are true communication professionals. All devices have both an M-Bus and a Modbus® interface for users to select from. In addition, two S0 interfaces are available for both energy directions, with the pulse rate adjustable.

Configuration and operation of the new meters are refreshingly straightforward: A large display facilitates operation using the integrated touch-sensitive controls. A configuration app can also be used that communicates with the device via Bluetooth®. With these new energy measurement devices, a wide variety of building and industrial applications can be implemented thanks to the MID declaration of conformity. Applications with consumption billing are also possible.

The Benefits for You:

  • Push-in CAGE CLAMP® and lever save time at every stage
  • Slimline design conserves valuable cabinet space
  • Professional communication thanks to the M-Bus and Modbus® interface and two S0 pulse outputs
  • Full transparency with an illuminated full-format display
  • Intuitive configuration through touch-sensitive controls and configuration app via Bluetooth®

Our Products from the Current Transformer and Voltage Tap Range

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

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

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

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.


Recommended Reading

Discover Our Other Product Ranges

Electrical Interconnections

For fast, secure, maintenance-free connections: WAGO is your partner for all conductor types. Our product selection runs from rail-mount terminal block systems, to installation and field-wiring terminal blocks, to pluggable connectors and feedthrough components, to PCB connections and marking solutions.


Automation Technology

Measurement, control, regulation: WAGO’s automation technology and associated software are future-ready and save time. Our I/O systems, controllers, displays and panels are distinguished by the highest level of reliability – even under extreme conditions.