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1SVR450117R1100 ABB CM-CT 300/1 Current Transformer 300 A / 1 A
ABB CM-CT 300/1 1SVR450117R1100 is a class 1 plug-in current transformer with a 300 A primary current, 1 A secondary current and 5 VA rated burden for industrial measuring and monitoring applications.
£33.55
Why Choose the ABB CM-CT 300/1 Current Transformer?
The ABB CM-CT 300/1 is a robust plug-in current transformer designed for current measurement and monitoring in industrial electrical systems. Supplied under ABB order code 1SVR450117R1100, it converts a rated primary current of 300 A to a standard secondary current of 1 A for compatible measuring, monitoring and control equipment.
As part of the ABB CM-CT current transformer range, the CM-CT 300/1 provides a rated burden of 5 VA with measurement precision according to accuracy class 1. Its window-type, through-conductor construction allows the primary conductor to pass through the transformer opening, providing a proportional secondary current for industrial measurement and monitoring circuits.
The CM-CT 300/1 has compact overall dimensions of approximately 61 × 78.5 × 48 mm, a 26 mm internal opening and a net weight of approximately 0.29 kg. It is supplied with a foot angle, insulating protective cap and bar fastening screws, while an optional snap-on mounting accessory enables convenient DIN-rail installation.
Key Advantages
- 300 A primary current rating for industrial current monitoring.
- 1 A rated secondary current for compatible measuring equipment.
- 300:1 current transformation ratio.
- 5 VA rated burden for measurement circuits.
- Accuracy class 1 for dependable current measurement.
- 26 mm internal opening accommodates suitable conductors.
- Supplied with foot angle, insulating protective cap and bar fastening screws.
- Optional snap-on accessory enables convenient DIN-rail mounting.
Key Features
- ABB CM-CT current transformer series.
- 300 A rated primary current.
- 1 A rated secondary current.
- 5 VA rated secondary apparent power.
- Accuracy class 1.
- 26 mm opening diameter.
- Suitable for conductor rails up to approximately 30 × 10 mm.
- Secondary connection via screw connection.
- Compact plug-in construction for industrial panel installations.
- Optional snap-on mounting accessory for DIN-rail installation.
Reliable Current Transformation for Industrial Monitoring
Current transformers reduce higher primary currents to standardised secondary currents that can be processed by compatible measuring, monitoring and control equipment. With its 300 A to 1 A transformation, the ABB CM-CT 300/1 provides a proportional secondary signal while allowing the connected measuring equipment to operate with a much lower current than the monitored primary circuit.
The CM-CT range is designed for switchboards, control cabinets, distribution equipment and industrial machinery where dependable current measurement is required. The CM-CT 300/1 is supplied with mounting and protective components, while an optional snap-on accessory provides a practical solution where DIN-rail mounting is preferred.
Typical Applications
- Industrial current measurement and monitoring.
- Electrical control panels and switchboards.
- Measuring and monitoring relay circuits.
- Industrial machinery and automation systems.
- Load and current monitoring applications.
- Electrical distribution and control equipment.
Technical Specifications
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| Device Type | Solid-core CT | |
|---|---|---|
| Monitoring Function | Current | |
| Series | CM-CT | |
| Order code | 1SVR450117R1100 | |
| Product group | 310921-Measuring & Monitoring Relays | |
| Product type | Current transformer | |
| Rated primary current | 300 A | |
| Rated secondary current | 1 A | |
| Current ratio | 300:1 | |
| Rated burden | 5 VA | |
| Accuracy class | Class 1 | |
| Opening diameter | 26 mm | |
| Maximum conductor rail size | approx. 30 × 10 mm | |
| Secondary connection | Screw connection | |
| Mounting | Panel mounting / optional DIN-rail mounting | |
| Width | 61 mm | |
| Height | 78.5 mm | |
| Depth | 48 mm | |
| Net weight | approx. 0.29 kg | |
| EAN | 4013614376887 | |
| Standards | IEC/EN 61869-1, IEC/EN 61869-2 | |
| Package quantity | 1 piece |
Frequently Asked Questions
What is the ABB CM-CT 300/1 used for?
The ABB CM-CT 300/1 is a current transformer designed to convert a higher primary current into a proportional lower secondary current for compatible electrical measuring and monitoring equipment.
What is the current ratio of the ABB CM-CT 300/1?
The CM-CT 300/1 has a rated primary current of 300 A and a rated secondary current of 1 A, giving a 300:1 transformation ratio.
What is the burden and accuracy class of the CM-CT 300/1?
The current transformer has a rated burden of 5 VA and measurement precision according to accuracy class 1.
What size conductor can pass through the ABB CM-CT 300/1?
The CM-CT 300/1 has an internal opening diameter of 26 mm and is suitable for a conductor rail up to approximately 30 × 10 mm.
Can the ABB CM-CT 300/1 be mounted on a DIN rail?
Yes. A compatible optional snap-on mounting accessory is available for installing the CM-CT 300/1 on a DIN rail.
ABB Current Transformers for Industrial Monitoring
ABB CM-CT current transformers provide dependable current transformation for industrial measuring, monitoring and control applications, combining standardised secondary outputs with compact installation and class 1 measurement accuracy.
