Safety Regulations
The device must be installed and operated by qualified personnel familiar with safety regulations. It should be mounted in a cabinet to prevent dust and moisture interference. Unauthorized modifications void the warranty. Proper disposal is required at the end of its service life.

Intended Usage
The device is designed for monitoring the power supply of a plant, specifically the phases and voltage values. It complies with low voltage and electromagnetic compatibility directives.

Unit Description
The unit is housed in a 22.5mm synthetic casing for DIN rail mounting, with connections via pluggable spring-loaded terminals. It includes measuring inputs for U, V, W with an input voltage of 3x400V AC, and a deactivation input IN1 with 24V DC.

Function Description
The DN3PW1 monitors the 3-phase supply voltage. All phases must be connected before power supply. LEDs indicate status, and contacts close after 3 seconds if all phases are present. Outputs switch off after a set reaction time if phases are missing.

Adjustment of Reaction Time
The reaction time is adjustable from 10 to 100ms using a rotary switch with 16 positions. The default setting is position 1.

Adjustment of Measuring Voltage Tolerance
The voltage tolerance is adjustable via a rotary switch with 16 positions, allowing for voltage fluctuations within the set tolerance without switching off.

Technical Data
Operating voltage is 24V DC with a power consumption of 2.4W. The input voltage range is 260V AC to 543V AC. The device supports a maximum switching cycle of 360 cycles per hour and operates within a temperature range of -10 to +60°C.

Dimensions and Installation
The device dimensions are 111mm x 114mm x 22.5mm. It is designed for installation on a DIN rail with specific fitting and removal instructions.