Dold product with article number 0066820, model UH6937.02PS/61 DC24V — a speed and frequency monitor relay:

Product Overview

• Model: UH6937.02PS/61
• Article Number: 0066820
• Function: Speed and frequency monitoring for motors and inverters
• Application: Monitors output frequency of inverters, rotor frequency of slipring motors, and phase sequence or rotary direction of 3-phase motors

Technical Specifications

• Auxiliary Voltage: DC 24 V
• Max. Response Frequency: 600 Hz
• Contacts: 2 NO (normally open) forcibly guided output contacts
• Connection Type: Pluggable terminal blocks (screw or cage clamp)
• Mounting: DIN rail
• Width: 45 mm
• Thermal Current (Ith): Max. 8 A
• Measuring Motor Voltage: Up to 690 V