United Automation, STOM-1, Thyristor Trigger Module, 18V ac, 93 x 62 x 44mm

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COO (Country of Origin): GB
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Phase Angle & Burst Firing Single-Phase, STOM-1

A solid state, microprocessor based device incorporating both Phase Angle and Burst Firing modes of power control (selectable).

Capable of controlling loads up to 25A at voltages up to 415 Vac
Can also be used for soft starting in Phase Angle and will automatically switch to Burst Firing at a preset signal level, remaining there even if the signal falls below preset level
18 Vac supply
0 to 30s adjustable ramp-up from cold
Control input 0 to 5V or 4-20mA current loop
Can be controlled by a temperature controller or PC


Mount on an adequate heat sink (heat sink compound stock no. 554-311 recommended). To comply with BSEN55014 in Phase Angle mode, a line filter should be used.


The number of complete mains cycles during fixed repeating periods (typically 1 to 10 seconds) is varied, thus altering the duty cycle or on-/off-time ratio. Trigger pulses coincide with the zero-crossing times of the mains supply thus ensuring no RFI is produced when using resistive loads.

Input Voltage AC 18V ac
Output Isolation 3500V
Mounting Type Screw Mount
Dimensions 93 x 62 x 44mm
Length 93mm
Height 44mm
Maximum Input Logic Voltage 440V
Width 62mm
Maximum Operating Temperature +65 °C
Minimum Input Logic Voltage 5V
Minimum Operating Temperature 0 °C
6 <재고있음> 5-9영업일내 홍콩 발송
단가 Each
(exc. VAT)
1 - 4
5 - 9
10 - 19
20 - 49
50 +