Integra CALEC ST II Montage- Und Bedienungsanleitung Seite 66

(A) Power supply terminal
(B) External isolating device
(C) External protection
The power supply is connected to the screw terminals (A).
After tightening the terminals, check that the wires are clamped securely.
Tighten the strain relief, check that it is functioning correctly.
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CALEC ST II
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