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Mode of operation:

A carrier plate uses adaption to make a positive fit on the spindle clamp (damper actuators) or on the position indication (rotary actuators) and transfers the position directly to the switching cams of the micro switches. Switching points can be freely selected with an adjustment dial. The current switch position can be read off at any time.

Application:

The auxiliary switch unit is used for signaling the position or for exercising switching functions in any given angle setting.

Simple direct mounting:

The auxiliary switches are attached directly by the spindle clamp (damper actuators) or on the position indication (rotary actuators). The guiding grooves between the housing and the switch ensure a tightly sealing fit.

Electrical Data:

Auxiliary switch 2 x SPDT, 0…100%, adjustable Switching capacity auxiliary switch 1 mA…3 (0.5 inductive) A, AC 250 V (II reinforced insulation), 1 mA0.5 (0.2 inductive; L/R = 3.4 ms) A, DC 110 V (II reinforced insulation) Switching points auxiliary switch Adjustable across the entire range of rotation 0…1 of the actuator. Presetting with scale possible. Connection auxiliary switch Cable 1 m, 6 x 0.75 mm

Safety Data:

Protection class IEC/EN II reinforced insulation Protection class UL II reinforced insulation Degree of protection IEC/EN IP54 Degree of protection NEMA/UL NEMA 2 Enclosure UL Enclosure Type 2 EMC CE according to 2014/30/EU Low voltage directive CE according to 2014/35/EU Certification IEC/EN IEC/EN 60730-1 and IEC/EN 60730-2-14 Certification UL cULus according to UL60730-1A, UL60730-2- 14 and CAN/CSA E60730-1:02 Mode of operation Type 1.B Rated impulse voltage auxiliary switch 4 kV Control pollution degree 3 Ambient temperature -30…50C Storage temperature -40…80C Ambient humidity Max. 95% r.H., non-condensing Maintenance Maintenance-free

Resources:

• Belimo S2A Auxiliary switch for Actuators Technical Datasheet