Siemens 3RT2636-1AP03 SIRIUS Capacitor Contactor, S2 Size, 50 kVAr / 400V, 3-Pole, 230V AC Coil, 1 NO + 1 NC Auxiliary Contact Original Brand New

Overview

The Siemens 3RT2636-1AP03 is a specialized SIRIUS series capacitor contactor, meticulously engineered for switching capacitive loads in reactive power compensation systems. Unlike standard contactors, the 3RT26 series is designed to handle the high inrush currents associated with switching capacitors, ensuring optimal performance and protection for your electrical network. This S2 size contactor features a 230V AC, 50 Hz coil and comes with a 3-pole configuration. Its built-in auxiliary contacts (1 normally open (NO) and 1 normally closed (NC)) provide enhanced control and monitoring capabilities.

Function

The core function of the 3RT2636-1AP03 is to switch capacitive loads up to 50 kVAr at 400V (AC-6b). It achieves this by utilizing leading auxiliary contacts that engage precharging resistors before the main contacts close. This innovative design effectively limits the peak charging current, thereby preventing negative impacts on the power supply network and extending the lifespan of both the contactor and the connected capacitors. The 3RT26 contactors are ideal for switching choked or unchoked capacitors in reactive current compensation systems and are also suitable for use in converter applications.

Benefit

• Extended Equipment Lifespan: By limiting inrush currents, the contactor reduces electrical stress on capacitors and the power grid.
• Enhanced Network Stability: Prevents voltage sags and disturbances caused by high peak currents, contributing to a more stable power supply.
• Reliable Performance: Engineered to IEC standards (IEC 60947, IEC 60831, IEC 61921), guaranteeing dependable operation and safety.
• Versatile Application: Suitable for various reactive power compensation systems and converter applications.
• Easy Integration: Features screw terminals for secure and straightforward wiring.
• Flexible Configuration: Can be expanded with additional lateral auxiliary switches for more complex control circuits.

Technical Specification

• Product Number: 3RT2636-1AP03
• Type: Capacitor Contactor
• Rated Power (AC-6b): 50 kVAr at 400 V
• Poles: 3-pole
• Coil Voltage: 230 V AC, 50 Hz
• Auxiliary Contacts: 1 NO + 1 NC
• Terminal Type: Screw Terminal
• Size: S2
• Standards: IEC 60947-1, IEC 60947-4-1, IEC 60947-5-1, IEC 60831-1, IEC 61921

Protection and Installation For proper operation and safety, all connections must be protected against short circuits and overloads. Refer to the product’s technical data sheet for detailed protection recommendations. For overvoltage protection at the control supply voltage, the device can be retrofitted with surge suppressors such as RC elements or varistors (sold separately). Note that adding surge suppressors may slightly increase the contactor’s break times.

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