Why Choose the Mersen M1024569 External Current Transformer Kit?
The Mersen M1024569 is a complete external current transformer kit designed for accurate three-phase current measurement in compatible NH fuse-switch disconnector systems. Also identified by the catalogue reference MZ3SW250, the kit provides a practical monitoring solution for industrial low-voltage switchboards and Mersen MULTIVERT® fuse systems.
The kit contains three current transformers, allowing the electrical current in all three phases to be measured. Each transformer provides a 250/5 A transformation ratio with Class 1 accuracy, making the assembly suitable for general monitoring, indication and load-management applications.
Designed for installation behind compatible NH size 1 to size 3 fuse-switch disconnectors, the M1024569 includes distance tubes for level adjustment. This manufacturer-designed arrangement supports straightforward integration while helping maintain an organised and compact switchboard layout.
Key Advantages
- Complete three-phase external current transformer kit.
- 250/5 A transformation ratio for industrial current measurement.
- Includes three current transformers for all-phase monitoring.
- Class 1 measurement accuracy.
- Designed for compatible NH size 1 to size 3 fuse-switch disconnectors.
- Installs behind the fuse-switch disconnector to conserve panel space.
- Supplied with distance tubes for convenient level adjustment.
- Supports integration with meters, monitoring equipment and control systems.
Key Features
- Mersen MZ3SW250 external current transformer kit.
- 250 A primary current rating.
- 5 A secondary current output.
- Three-pole current measurement.
- Class 1 accuracy.
- Set contains three current transformers.
- Compatible with NH1, NH2 and NH3 fuse-switch disconnectors.
- Designed for rear installation on compatible fuse-switch equipment.
- Includes distance tubes for installation-height adjustment.
- RoHS-compliant construction.
Reliable Three-Phase Current Measurement
Current transformers reduce high primary currents to a proportional secondary current that can be safely measured by compatible meters, relays and monitoring equipment. The Mersen M1024569 converts primary currents of up to 250 A into a standard 5 A secondary signal for straightforward integration with industrial measurement systems.
By providing one current transformer for each phase, the kit enables operators to monitor phase loading, identify imbalances and evaluate electrical demand. Rear installation behind the compatible fuse-switch disconnector also helps minimise the space required inside the switchboard.
Typical Applications
- Industrial low-voltage switchboards.
- Mersen MULTIVERT fuse systems.
- NH fuse-switch disconnector assemblies.
- Three-phase load monitoring.
- Electrical panel meters and ammeters.
- Power-management and monitoring systems.
- Motor control centres.
- OEM switchboard and panel manufacturing.
