Saftronics SH4 Burst Firing Heater Controller
Saftronics Heater Controller SH4 series are solid state, burst firing controllers for three phase resistance loads.
Each controller contains 4 x SCR’s in the power circuit. The power circuit is controlled by means of a Saftronics SH4 series control card.
Saftronics solid-state controllers are constructed in a manner, which permits rapid removal, and replacement of PC boards, SCR’s, control
fuses, etc. This ensures minimum downtime in the unlikely event of failure of one of these devices.
In the case of loss, or insufficient cooling air resulting in overheating of the heat sink, a thermal switch will open and shut down the controller thereby protecting the SCR’s from excessive heating.
The Saftronics SH4 range of heater controllers covers power ratings from 70kW to 730kW with 380V or 525V supplies as standard. Larger powers and different voltages are available on request.
Features:
- Adjustable Cycle and Span time
- dv/dt protection
- Fuse Protection
- CE Approved (Optional)
- Less than 1% Harmonics
Read about the difference between Burst Firing and Phase Angle heater controllers here.
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