PMA TB 45 Precise Signal Monitoring Limit Controller

The TB 45 temperature limiter is intended for precise, cost-effective signal monitoring & limiting tasks.

The TB 45 can be used for heating and refrigeration processes. It is suitable for all thermocouple types and resistance type sensors. It is particularly designed for use in:

All applications where an over or under temperature fault condition could present fire hazard or other hazard
Heating system in buildings to DIN EN 12828
Large hot-water boilers to DIN EN 12953-6
Thermal transfer plants with organic heat transfer media to DIN 4754
Oil-fired installations to DIN 4755
Limit signalling function for any type of input signal

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Additional information



Din Size

Dimensions and Size

99mm x 22.5mm x 118mm (HxWxD)


Screw terminals or spring loaded terminals

Primary Input Type

Universal (TC, RTD, DC linear mA/mV)

Other Inputs

2nd universal input

Output Type

Relay, Linear mA/V DC

Max. Number of Outputs:


Scan Time:

100 ms

Control Type:

Temperature limiter

Power Supply:

Trans100–240VAC, 18-30V AC/DC


Modbus RTU, Via adapter (ETH-MODBUS TCP, PROFIBUS, CAN-open)

Other Functions

Max.-, Min.-, Mean value


CE, Type tested to EN 14597 (replaces DIN 3440), cULus

Software Tools: