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        Tesla TESHRN-55 | Voltage Monitoring Relay 3P 400V

        The Tesla TESHRN-55 Voltage Monitoring Relay is designed to monitor phase sequence and detect phase failure in 3-phase mains. It ensures reliable system operation by identifying when monitored voltage levels are too high or too low. The relay includes fixed and adjustable delay times, giving you flexible control over response times. Powered by all three phases, it stays functional even if one phase fails. Clear LED indicators show power presence and fault conditions. With its compact design and DIN rail mounting, the TESHRN-55 fits easily into standard electrical setups.

        TESHRN-55 Features

        • Phase sequence and failure monitoring. Checks for correct phase sequence and detects failure of any phase in 3-phase systems.
        • Voltage monitoring. Operates within a 400V AC 3-phase range.
        • Independent phase supply. Stays operational even if one phase is missing, powered by all three phases.
        • Adjustable time delay. Fixed delay T1 at 500 ms and adjustable delay T2 from 0.1 to 10 seconds.
        • LED status indicators. Green LED shows power presence; red LED signals fault conditions.
        • DIN rail mounting. Compatible with standard DIN rails (EN 60715) for easy installation.
        • Robust design. Operates in temperatures from -20°C to 55°C with IP40 front protection.

        TESHRN-55 FAQ

        Q: What happens if the phase sequence is incorrect?
        A: The red LED stays on continuously, and the relay remains open to prevent damage.

        Q: Does it function if one phase fails?
        A: Yes, the HRN-55 model stays operational even if a single phase is lost.

        Q: What is the adjustable delay range?
        A: T2 delay can be adjusted from 0.1 to 10 seconds using a front panel potentiometer.

        (TESHRN-55)

        Warranty

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        Features
        Specification Details
        Product Name HRN-55
        Monitoring Terminals L1, L2, L3
        Supply Terminals L1, L2, L3
        Nominal Voltage 3 x 400V AC (50-60Hz)
        Burden Max 2VA / 1W
        Overvoltage Threshold (Umax) 125% Un
        Undervoltage Threshold (Umin) 75% Un
        Hysteresis 2%
        Max Permanent Voltage AC 3 x 460V
        Peak Overload Voltage (1ms) AC 3 x 500V
        Time Delay t1 Max 500ms
        Time Delay t2 Adjustable 0.1 - 10s
        Time Delay t3 Max 1s
        Output Contact 1x SPDT (AgNi)
        Rated Current 8A / AC1
        Switching Voltage 250V AC / 24V DC
        Operating Temperature -20°C to 55°C
        Storage Temperature -30°C to 70°C
        Mounting DIN rail EN 60715
        Protection Degree IP40 (front) / IP10 (terminals)
        Dimensions (mm) 90 x 17.6 x 64
        Weight 61g
        Standards EN 60255-1, EN 60255-26, EN 60255-27
        Specifications

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Tesla
        SKU TESHRN-55
        Barcode # 8595188137225
        Package Weight 0.075kg
        Package Width 0.022m
        Package Height 0.072m
        Package Length 0.099m
        TYPE VALUE
        Type Monitoring Relay
        Brand Tesla
        Voltage (V) 400
        Single or 3 Phase 3 Phase
        Dimensions 90 x 17.6 x 64mm
        Amperage 10A
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