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Learn more by watching our Tesla TESHRN-55 | Voltage Monitoring Relay 3P 400V video.
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.
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)
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Warranty starts from Invoice Date
Domestic Use: 1 Year
Commercial Use: 1 Year
Warranty Method: Return to Sparky Direct
| 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 |
Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.
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