Siemens 110/415V 1 module 5ST3030 current coil

Auxiliary contacts are secondary switching devices that operate in conjunction with primary switching equipment such as circuit breakers, relays, and contactors. These contacts are physically connected to the main switching mechanism and are activated simultaneously.

What are they used for? Auxiliary contacts are used for various functions, e.g. self-holding, consent/block, signaling, interlocking.

The switch with electronic release (also called throw coil) is a switch that is opened, in case of failure, by an electromechanical actuator (opening solenoid) activated by an electronic device able to elaborate a signal proportional to the current that crosses the power contacts.

Features:

• Siemens series
• 1 module
• Electrical life span (switching cycles) typ 10,000
• Operating voltage nominal value 230 Vac, with AC nominal value min 110 Vac, with AC nominal value max 415 Vac
• Protection degree IP20
• Connectable conductor section min 0.5 mm² - max 2.5 mm².
• Tightening torque with screw terminals max 1 Nm
• Type of conductor cross-sections that can be connected with AWG 24...12 conductors
• Height 90 mm
• Width 18 mm
• Depth 70 mm
• Net weight 100 g
• Number of error signalling contact blocks 0
• Number of NC contacts 0
• Number of NO contacts 2
• Number of CO contacts 0
• Ambient temperature during operation min -25 °C - max 55 °C
• Ambient temperature during storage min admissible -40 °C - max admissible 75 °C