The recommended torque for the screw terminals of IL251-73 is 0.8-1.2 Nm (7-10 in-lbs).
Yes, the IL251-73 is designed to withstand high-vibration environments. It meets the vibration test requirements of IEC 60068-2-6.
No, the IL251-73 is not designed for use in hazardous locations. It does not meet the requirements for explosion-proof or intrinsically safe devices.
The maximum wire size that can be used with the IL251-73 is 2.5 mm² (14 AWG).
The IL251-73 is designed to operate in a humid environment, but it is not suitable for use in wet environments. It meets the humidity test requirements of IEC 60068-2-78.