Abb CT1M-2 150/5A Toroidal Transformer for networks up to 150A CT2150
Current transformer Abb CT1M-2 150/5A, is designed for indirect measurement of electrical parameters in low-voltage systems. Compact, reliable and complying with international standards, it is the ideal choice for industrial and civil electrical panels, with the following features:
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Rated primary current: 150 A
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Rated secondary current: 5 A
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Feed-through cable cross-section: 21 mm
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Rated internal cross-section: 20 x 10 mm
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Degree of protection: IP20
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Dimensions: 45x65x40 mm
Current transformer reliable performance and measurement accuracy
This current transformer is suitable for all applications where accurate measurement of the electrical load is required, without interrupting the main circuit. It safely transforms high line current into a standardized secondary signal that can be used by energy analysis instruments, differential protectors, meters and automation devices.
Robust, insulated plastic construction ensures safety in low-voltage environments, while the compact design allows mounting in tight spaces within electrical panels.
Ease of installation and compatibility
The CT1M-2 allows the insertion of bars or conductors with cross-sections up to 21 mm in diameter or 20 x 10 mm, making it versatile in various configurations. It can be both DIN rail and panel mounted, providing flexibility in switchboard layout.
It is fully compatible with ABB instruments for measurement and protection, as well as with third-party devices, thanks to its normalized 5 A secondary.
Standards and sustainability
The transformer complies with IEC 61869-2 and meets the most stringent European environmental directives, such as RoHS, REACH and WEEE. It is classified as an ETIM EC002048 product and can be recycled at end of life, according to current regulations.
Areas of application
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Energy monitoring in buildings and industries
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Distribution and automation boards
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Photovoltaic systems and generators
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Load management systems and smart meters
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Control and measurement in three-phase systems
Technical Characteristics Current Transformer Abb
| Transformation Ratio | 150 / 5 A |
| Rated frequency | 50 / 60 Hz |
| Cable/through-bar section | Ø 21 mm or 20 x 10 mm |
| Degree of protection | IP20 |
| Dimensions (W x H x D) | 45 x 65 x 40 mm |
| Fixing | DIN rail or panel |
| Standards | IEC 61869-2, CE, RoHS, REACH |
| ETIM Classification | EC002048 |
Data sheet
- Type: Toroidal Transformers
- Amps: 5A
150A
: 3

