The MOK-V2 series instruments (2 changeover contacts) are measurement relays with adjustable hysteresis. The instrument measures voltage in a monitored circuit:

- The contacts switch to the ‘Work’ state when this parameter exceeds the pickup voltage threshold selected by the user and is expressed as a percentage of the rated voltage

- The relay returns to the ‘rest’ state when the measured value falls below the dropout threshold (also selected by the user)

These models are suitable for monitoring and protecting electrical equipment used in the most demanding mains, such as:

- Power stations

- Electrical transformer stations

- Industries using continuous production processes

- Railways, including track equipment and rolling stock

The relay has two adjustable voltage thresholds:

- Pickup voltage

- Dropout voltage

The pickup voltage can be set between 60% and 120% of the rated voltage. The dropout voltage can be set between 70% and 98% of the pickup voltage. Particularly suitable for monitoring battery voltages in the rail-tram-trolleybus mains.

Compliance with standards

• EN 61810-1, EN 61810-2, EN 61810-7 Electromechanical elementary relays
• EN 60695-2-10 Fire hazard testing
• EN 5008-2 Electromagnetic compatibility
• EN 60529 Degrees of protection provided by enclosures
• EN 60077 Electric equipment for rolling stock - General service conditions and general rules
• EN 50155 Electronic equipment used on rolling stock
• EN 61373 Shock and vibration tests, category 1, class B
• EN 45545-2 Requirements for fire behaviour of materials and components - Product No. EL10 - Requirement R26, V0
• ASTM E162, E662 Standard test method for surface flammability of materials; Standard test method for specific optical density of smoke

• Plug-in measurement relay
• 2 C/O contacts, 8 A
• Adjustable excitation and release thresholds with two independent potentiometers
• Electronic circuit with no auxiliary power supply required
• Solid and robust construction
• Excellent resistance to shock and vibration
• Wide choice of associated bases and locking springs

To fully meet your expectations, a range of accessories is available that is compatible with your equipment. Feel free to add them to your quote request to obtain a complete and tailored solution.