Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC, 27-32A Adjustable Current, 32A Contact Rating, 15 kW 3RU2126-4EC0

Siemens 3RU2126-4EC0 SIRIUS 3RU2 Thermal Overload Relay is engineered for reliable current-sensitive protection of industrial motors with normal starting conditions. It features an adjustable current range between 27 and 32 amperes and is rated for a maximum relay contact current of 32 amperes. Suitable for controlling motors up to 15 kW, this relay supports direct mounting and cage clamp terminal connections, offering robust and efficient installation.

The relay incorporates 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration with two auxiliary contacts to enable versatile control setups. It includes both automatic and manual reset methods via a selector switch, providing flexibility depending on operational requirements. The control device is rated IP20, offering protection against solid objects but requires installation in a controlled indoor environment.

This thermal overload relay is designed with a compact form factor, measuring 45mm width, 87mm length, and 73mm depth, allowing for space-efficient panel installation. Operating temperature ranges from -40°C to 70°C ensure reliable performance across various industrial settings. Additionally, the device offers high impulse voltage resistance of 6 kV and insulation voltage of 690 volts, ensuring durable performance under electrical stress.

Approved under multiple international standards and certifications such as CE, UL, CSA, CCC, EAC, and IEC protocols, this overload relay meets stringent quality and safety requirements. Manufactured in Germany, it is compatible with Siemens Sirius Size S0 & S00 contactors and suitable for industrial automation, electrical control, HVAC, manufacturing, and other commercial applications requiring precise motor overload protection.

This relay features a 1 NO/1 NC contact configuration for versatile control applications. Power rating supports up to 15 kilowatts, suitable for various industrial motors. Equipped with cage clamp terminals ensuring secure electrical connections.

Supports automatic and manual reset methods for flexible operation. The device includes two auxiliary contacts enhancing control circuit functionality. Designed for direct mount type with an IP20 protection rating for indoor environments.

Operates reliably within a temperature range of -40°C to 70°C. Dimensions are compact with 45mm width, 87mm length, and 73mm depth for easy installation. Complies with multiple international standards including CE, UL, CSA, and IEC certifications.

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