Wöhner 33751 CT3 current transformer with 150 A primary current, 5 A secondary output, 2.5 VA burden and class 0.5 accuracy for QUADRON 185Power size 00 switch-disconnectors.
£154.28
The Wöhner 33751, manufacturer part number 33751 000, is a precision 150 A / 5 A current transformer designed for compatible QUADRON® 185Power NH size 00 fuse switch-disconnectors. Offering a 2.5 VA rated burden and accuracy class 0.5, it provides highly accurate current measurement for energy monitoring, power metering and industrial electrical distribution systems.
Manufactured in the compact CT3 frame size, the Wöhner 33751 integrates directly into compatible size 00 devices without increasing the overall panel footprint. Its standard 5 A secondary output allows seamless connection to multifunction meters, energy management systems and protection relays while maintaining the modular design of the Wöhner 185Power system.
Designed for demanding industrial environments, the transformer complies with IEC 61869-1 and IEC 61869-2 standards and features FS5 over-current limitation, a 720 V maximum operating voltage and halogen-free construction for dependable long-term performance.
The Wöhner 33751 converts a primary current of 150 A into a standard 5 A secondary output, providing precise measurement data for energy meters, power analysers, multifunction meters and protection equipment. Its class 0.5 accuracy makes it particularly suitable where reliable measurement accuracy is essential.
Specifically designed for the Wöhner QUADRON® 185Power size 00 platform, the CT3 transformer integrates neatly into switchgear while maintaining safe electrical isolation between the primary circuit and monitoring equipment. The FS5 over-current limitation factor also helps protect connected measuring instruments during abnormal operating conditions.
| Current | 150 A |
|---|---|
| Manufacturer | Wöhner |
| Part number | 33751 000 |
| SKU | 33751 |
| Product type | Current transformer |
| System | 185Power / Measurement Technique |
| Frame size | CT3 |
| Compatible equipment | QUADRON® 185Power size 00 |
| Primary rated current | 150 A |
| Secondary rated current | 5 A |
| Transformer ratio | 150/5 A |
| Rated apparent power | 2.5 VA |
| Accuracy class | 0.5 |
| Maximum operating voltage | 720 V |
| Over-current limitation factor | FS5 |
| Connection type | Double terminal |
| Suitable for | Copper conductors |
| Material | Halogen-free |
| Pack quantity | 1 |
| EAN | 4021267337513 |
| ETIM | EC002048 |
| Standards | IEC 61869-1:2007, IEC 61869-2:2012 |
The Wöhner 33751 is a current transformer that converts a primary current of 150 A into a standard 5 A secondary output for monitoring, metering and protection applications.
The transformer ratio is 150 A / 5 A, equivalent to 30:1.
The transformer has an accuracy class of 0.5, making it suitable for precise energy measurement and monitoring.
It is designed for compatible QUADRON® 185Power NH size 00 fuse switch-disconnectors.
The Wöhner 33751 has a rated apparent power of 2.5 VA.
The transformer complies with IEC 61869-1:2007 and IEC 61869-2:2012.
Wöhner current transformers are trusted by switchgear manufacturers, panel builders and electrical engineers for delivering accurate measurement, dependable performance and seamless integration into industrial low-voltage power distribution systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...