GIC Thermistor Monitoring Relay with DPDT Contacts, 24 V ac/dc

Enrgtech Part No: ET14117808
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Manufacturer Part No:
MJA3BK
|
Manufacturer: GIC

MJA3BK GIC Thermistor Monitoring Relay with DPDT Contacts, 24 V ac/dc

Product Information

Current Range:

Maximum of 6A

Time Delay:

100 ms, 500ms

Dimensions:

100.5 x 22.5 x 83mm

Mounting Type:

DIN Rail

Operating Temperature Range:

+60°C

Series:

PD 225

Monitoring Application:

Thermistor motor temperature protection

Height:

83mm

Width:

22.5mm

Length:

100.5mm

Minimum Operating Temperature:

-15°C

Maximum Current Sensed:

Checking for live stock

The GIC MJA3BK is a compact DIN-rail-mounted thermistor monitoring relay designed for motor winding protection and temperature sensing via PTC thermistors. Supporting both 24 V AC and 24 V DC supplies, it features dual change-over (DPDT) contacts for simultaneous alarm and shutdown signalling. With an operating temperature range from -15 °C to +60 °C, and a width of just 22.5 mm, it fits neatly into control panels where space is at a premium.

Special Features and Benefits of the GIC Thermistor Monitoring Relay with DPDT Contacts

Dual change-over contacts (DPDT) allow both alarm and auxiliary output.
24 V AC/DC supply ensures compatibility with low-voltage control systems.
Wide operating temperature span (-15 °C to +60 °C) adapts to industrial environments.
DIN rail mounting and slim 22.5 mm housing simplify panel installation.
Monitoring application tailored to PTC thermistor sensors for motor temperature protection.
Short response delay (ON delay ≈100 ms, OFF delay ≈150-500 ms) supports rapid protection.

Engineered for Reliable Protection

The MJA3BK from GIC is engineered to detect abnormal temperature rises via PTC thermistor probes and initiate a protective response across both relay channels. Its dual contact outputs provide flexibility for driving a shutdown mechanism and signalling system simultaneously. The compact form-factor and DIN-rail compatibility make it ideal for machinery control cabinets and motor circuits where efficient use of space is critical.

Usage Scenarios of the Product

Monitoring motor winding temperatures in industrial drives and conveyor systems.
Detecting over-temperature conditions in transformers or alternators.
Providing signal and shutdown logic in machine tool control panels.
Retro-fitting into existing low-voltage 24 V control systems for thermal protection.
Integration into tertiary-level safety systems for process plants and automation control.

PTC Thermistor Relay Series PD 225 Data Sheet(Technical Reference)

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FAQs

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You can order GIC brand products with MJA3BK directly through our website or call us at +44 (0) 3303 800 157 or email our support team at sales@enrgtech.co.uk.

Yes. Our products in Monitoring Relays category are shipped in lowest possible time.

You will get a confirmation email regarding your order of GIC Thermistor Monitoring Relay with DPDT Contacts, 24 V ac/dc. You can also check on our website or by contacting our customer support team for further order details on GIC Thermistor Monitoring Relay with DPDT Contacts, 24 V ac/dc.