| Attribute | Value |
|---|---|
| Brand | Crompton Instruments |
| Manufacturer | Tyco Electronics UK Ltd |
| Product Type | Signal Isolator |
| Model No. | 250-ISAG-HF |
| Input | 20 Milliamps DC (Max Compliance Voltage: 18V) |
| Output | 20 Milliamps DC (Max Compliance Voltage: 15V) |
| Accuracy | C.L. 0.2% Nominal at 23°C |
| Isolation Test Voltage | 1 kV at 50 Hz |
| Additional Markings | 497871 12 430785*1 T11, E149713 |
| Country of Origin | United Kingdom |
| Weight | 120 gm |
| Ref No. | 58265 |
What Is the Crompton Tyco Electronics 250-ISAG-HF Signal Isolator?
The 250-ISAG-HF Signal Isolator is an industrial-grade device designed to isolate, convert, and condition electrical signals for control and monitoring systems. Manufactured by Tyco Electronics (formerly Crompton), it ensures that input signals such as voltage or current are transmitted accurately to receiving devices like PLCs, HMIs, controllers, and recorders without electrical noise, ground loops, or interference.
In complex industrial circuits, multiple instruments share power and signal lines. Without isolation, faults or disturbances in one device can affect the entire system. This isolator prevents such issues by creating an electrical barrier between input and output, ensuring safe, accurate, and stable signal transmission.
Key Features of the 250-ISAG-HF Signal Isolator
1. High-Performance Signal Isolation
The isolator effectively separates input and output circuits to prevent ground loops, electrical interference, and voltage spikes. This is essential in environments with heavy machinery and sensitive instrumentation.
2. Accurate Signal Conditioning
It converts raw, noisy, or unstable signals into standardized, clean outputs suitable for PLCs and controllers.
3. Wide Compatibility
Designed to work with multiple signal types—current inputs (like 4–20mA) or voltage signals—making it flexible for many industrial applications.
4. High Reliability in Harsh Environments
Crompton Tyco products are widely used in marine, offshore, and industrial plants due to their rugged construction and long service life.
5. Compact and Easy to Integrate
Its modular design allows easy installation inside control panels and monitoring units.
6. Enhanced Electrical Protection
Protects downstream devices from electrical surges, unstable currents, and unexpected fluctuations.
7. Low Maintenance & Long Life
Once installed, the isolator requires minimal attention and delivers consistent performance over years of operation.
Applications of the 250-ISAG-HF Signal Isolator
1. Industrial Automation Systems
Used to protect PLCs, SCADA systems, and field instruments from noise and irregular signals.
2. Marine and Offshore Machinery
Perfect for ship automation, engine control rooms, and navigation systems where reliability is crucial.
3. Power Generation & Substations
Ensures accurate signal transmission between measurement devices and control units.
4. Process Industries
Common in oil & gas, petrochemical plants, refineries, and chemical processing units where sensitive measurements must remain stable.
5. HVAC & Building Automation
Helps maintain noise-free connections between sensors, controllers, and monitoring systems.
6. Manufacturing Machinery
Used in CNC machines, production lines, motor control centers, and industrial drives.
7. Safety and Monitoring Systems
Ensures accurate communication in alarm systems, emergency shutdown units, and environmental monitoring devices.
Why Choose the Crompton Tyco Electronics 250-ISAG-HF?
Trusted Brand in Industrial & Marine Automation
Tyco Electronics products are globally recognized for their reliability, precision, and long service life.
Superior Signal Stability
The isolator ensures error-free data transfer even in electrically noisy environments such as ships, industrial floors, and substations.
Protects High-Value Equipment
It prevents expensive PLCs, transmitters, and control boards from electrical interference and surges.
Enhances System Accuracy
With clean and isolated signals, your monitoring and control systems deliver more consistent performance.
Reduces Maintenance Costs
Reliable signal isolation reduces downtime, false alarms, and equipment damage.
Perfect for Industrial & Marine Use
Built to withstand rough conditions—ideal for installations on board ships and in heavy industrial plants.
Easy to Install & Replace
Its modular design ensures quick integration into existing or new control systems, reducing installation time.











