SZ-7524T2 Temperature Controller | 20A Relay with Defrost

Product Summary

The SZ-7524T2 Temperature Controller is a high-capacity controller with 20(8)A compressor relay, fan & defrost relays, and integrated alarm buzzer. With time or temperature-based defrost, fault detection inputs, and auto operation in case of sensor failure, it ensures consistent cooling performance for commercial and industrial refrigeration systems.

Key Features

• 20(8)A heavy-duty compressor relay

• Fan relay (5A) and defrost relay (8A)

• Internal buzzer alarm for quick fault alerts

• Wide temperature range: –50°C to +50°C

• Resolution: 0.1°C or 1°C (settable)

• Inputs: Compressor fault & door open fault

• Auto/manual defrost options (time or temperature-based)

• Touch-sensitive keypad with password protection

• Prokey support for quick upload/download of parameters

• Auto operation in case of sensor failure/error

• High & low temperature logs for monitoring

• Panel mount housing: 94 × 35.3 × 80 mm (cutout 71 × 29 mm)

Applications

• Freezers

• Small cold rooms

• Refrigerated tables

• Commercial refrigeration units

• Food preservation & storage systems

Product Benefits

• Heavy-duty compressor relay → ensures reliable operation in high-load applications

• Advanced safety → detects compressor and door faults, with buzzer alarm alert

• Optimized cooling → time or temperature-based defrost improves efficiency

• Error-proof operation → continues automatically in case of sensor failure

• User convenience → touch keypad, password security, and Prokey support

FAQs

Q1. What is the compressor relay capacity of SZ-7524T2?
It supports a 20(8)A compressor relay for heavy-duty operation.

Q2. Can it handle defrost operations?
Yes, it supports time or temperature-based defrost, with auto/manual modes.

Q3. What types of faults does it detect?
It detects compressor faults and door open faults, with buzzer alerts.

Q4. What applications is it best suited for?
It is ideal for freezers, small cold rooms, and refrigerated tables.