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33750 Wohner current transformer 100 A / 5 A, with decl. of conformity
Wöhner 33750 CT3 current transformer with declaration of conformity, 100 A primary current, 5 A secondary output, 1.5 VA burden and class 0.5 accuracy.
£106.19
Why Choose the Wöhner 33750 Current Transformer?
The Wöhner 33750, manufacturer part number 33750 000, is a precision 100 A / 5 A current transformer with declaration of conformity, designed for accurate current measurement in compatible QUADRON® 185Power size 00 fuse switch-disconnectors. It features a 1.5 VA rated burden, accuracy class 0.5 and is supplied with an official declaration of conformity for applications where documented compliance is required.
Manufactured in the compact CT3 frame size, the Wöhner 33750 integrates directly into compatible size 00 switch-disconnectors while occupying minimal panel space. Its standard 5 A secondary output is suitable for connection to multifunction power meters, energy monitoring systems and protection relays in commercial and industrial electrical installations.
With class E insulation, a 720 V maximum operating voltage and a 6 kA thermal short-time current rating, this transformer delivers reliable long-term measurement performance in demanding industrial environments.
Key Advantages
- Precision 100 A / 5 A current transformer.
- Supplied with an official declaration of conformity.
- Accuracy class 0.5 for precise measurement.
- Rated burden of 1.5 VA.
- Compact CT3 frame size.
- Designed for QUADRON® 185Power size 00 devices.
- Ideal for energy monitoring and electrical metering.
- Halogen-free construction.
Key Features
- Primary rated current: 100 A.
- Secondary rated current: 5 A.
- Rated apparent power: 1.5 VA.
- Accuracy class: 0.5.
- Declaration of conformity included.
- Over-current limitation factor: FS5.
- Maximum operating voltage: 720 V.
- Double terminal connection.
- Suitable for copper conductors only.
Certified Current Measurement for Industrial Applications
The Wöhner 33750 converts a primary current of 100 A into a standard 5 A secondary output, enabling accurate monitoring by multifunction meters, energy-management systems and protection relays. Its class 0.5 accuracy provides dependable measurement for applications where improved precision is required.
Unlike the standard 33749 version, the Wöhner 33750 is supplied with a declaration of conformity, making it suitable for projects where national regulations or customer specifications require documented conformity of the measuring transformer.
Typical Applications
- Industrial switchboards.
- Energy monitoring systems.
- Electrical metering.
- Power quality monitoring.
- Motor control centres.
- OEM machinery panels.
- Commercial electrical installations.
- Building energy management systems.
- QUADRON® 185Power size 00 switchgear.
- Projects requiring a declaration of conformity.
Technical Specifications
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| Conductor Size | 2.5–4 mm² | |
|---|---|---|
| Current | 100 A | |
| Manufacturer | Wöhner | |
| Part number | 33750 000 | |
| SKU | 33750 | |
| Product type | Current transformer | |
| System | 185Power | |
| Frame size | CT3 | |
| Compatible equipment | QUADRON® 185Power size 00 | |
| Primary rated current | 100 A | |
| Secondary rated current | 5 A | |
| Transformer ratio | 100/5 A | |
| Rated apparent power | 1.5 VA | |
| Accuracy class | 0.5 | |
| Maximum operating voltage | 720 V | |
| Thermal short-time current | 6 kA | |
| Over-current limitation factor | FS5 | |
| Insulation class | E | |
| Power dissipation (80% load) | 3.2 W | |
| Power dissipation (full load) | 5.0 W | |
| Connection type | Double terminal | |
| Conductor size | 2.5–4 mm² | |
| Suitable for aluminium conductors | No | |
| Dimensions (W × H × D) | 44 × 30 × 99 mm | |
| Weight | Approx. 0.28 kg | |
| Material | Halogen-free | |
| Pack quantity | 1 | |
| EAN | 4021267337506 | |
| ETIM | EC002048 | |
| Standards | IEC 61869-1:2007, IEC 61869-2:2012 |
Frequently Asked Questions
What is the Wöhner 33750 used for?
The Wöhner 33750 is a current transformer used to convert a primary current of 100 A into a standard 5 A secondary output for electrical monitoring and metering equipment.
What is the transformer ratio?
The Wöhner 33750 has a transformer ratio of 100 A / 5 A.
What makes the Wöhner 33750 different from the 33749?
The Wöhner 33750 has the same electrical characteristics as the 33749 but is supplied with an official declaration of conformity for applications requiring documented compliance.
What accuracy class does the transformer provide?
The transformer has an accuracy class of 0.5 with a rated burden of 1.5 VA.
Can aluminium conductors be connected?
No. The transformer terminals are designed for copper conductors between 2.5 mm² and 4 mm² only.
Which standards does the transformer comply with?
The Wöhner 33750 complies with IEC 61869-1:2007 and IEC 61869-2:2012.
Certified Current Measurement for Professional Switchgear
Wöhner current transformers are trusted by panel builders, electrical engineers and system integrators for delivering accurate current measurement, reliable long-term performance and documented conformity where required.
