
Siemens Industrial Controls 3RT2026-1AC20 Contactor
The Siemens 3RT2026-1AC20 Contactor is a robust, industrial-grade power contactor engineered for high-cycle motor control in HVACR and automation systems. As a core component of the SIRIUS innovation series, this Size S0 contactor is the upgraded successor to the now-obsolete 3RT1026-1AC20, offering superior reliability with a mechanical service life of up to 10 million switching cycles. This 3-pole IEC contactor is designed for a rated operational current of 25 Amps (AC-3) and features a 24V AC 50/60Hz coil, making it a standard choice for 24-volt control circuits.
Built for demanding environments, the 3RT20261AC20 utilizes screw terminals for secure, vibration-resistant wiring and is internationally finger-safe per EN 50274 standards. With a power rating of 11 kW at 400V and a maximum horsepower of 15 HP at 460V for 3-phase applications, this unit ensures stable performance for compressors, fans, and pump motors. The integrated 1NO + 1NC auxiliary contacts allow for immediate feedback and interlocking without the need for additional add-on blocks, though the S0 frame remains fully compatible with front-mount or side-mount accessories for expanded functionality.
Key Benefits:
- SIRIUS Innovation Compatibility: Seamlessly replaces the previous 3RT1026-1AC20 models with the same mounting footprint.
- Integrated Auxiliaries: Features factory-installed 1 NO + 1 NC auxiliary contacts for streamlined control circuit logic.
- High Durability: Rated for up to 10,000,000 mechanical operations, reducing maintenance intervals in high-cycling HVACR equipment.
- Flexible Mounting: Designed for standard 35mm DIN rail or screw-on surface mounting for rapid installation in control cabinets.
- Climate-Proof Design: Approved for global service with an insulation voltage rating of 690V and an IP20 protection rating.
Common Questions:
Is this a direct replacement for the 3RT1026 series?
Yes, the 3RT2026-1AC20 is the direct dimensional and electrical successor to the 3RT1026-1AC20. However, always verify that any legacy snap-on accessories are compatible with the SIRIUS 3RT2 frame before installation.
What is the maximum amperage for resistive loads (AC-1)?
While the inductive motor rating (AC-3) is 25A, this contactor is rated for up to 40 Amps for resistive loads (AC-1) at temperatures up to 40°C.
Does this unit support DC motor control?
The main contacts can switch DC-1, DC-3, and DC-5 currents, but technical data must be consulted for specific voltage de-rating and current path configurations.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Siemens Industrial Controls 3RT2026-1AC20 Contactor
The Siemens 3RT2026-1AC20 Contactor is a robust, industrial-grade power contactor engineered for high-cycle motor control in HVACR and automation systems. As a core component of the SIRIUS innovation series, this Size S0 contactor is the upgraded successor to the now-obsolete 3RT1026-1AC20, offering superior reliability with a mechanical service life of up to 10 million switching cycles. This 3-pole IEC contactor is designed for a rated operational current of 25 Amps (AC-3) and features a 24V AC 50/60Hz coil, making it a standard choice for 24-volt control circuits.
Built for demanding environments, the 3RT20261AC20 utilizes screw terminals for secure, vibration-resistant wiring and is internationally finger-safe per EN 50274 standards. With a power rating of 11 kW at 400V and a maximum horsepower of 15 HP at 460V for 3-phase applications, this unit ensures stable performance for compressors, fans, and pump motors. The integrated 1NO + 1NC auxiliary contacts allow for immediate feedback and interlocking without the need for additional add-on blocks, though the S0 frame remains fully compatible with front-mount or side-mount accessories for expanded functionality.
Key Benefits:
- SIRIUS Innovation Compatibility: Seamlessly replaces the previous 3RT1026-1AC20 models with the same mounting footprint.
- Integrated Auxiliaries: Features factory-installed 1 NO + 1 NC auxiliary contacts for streamlined control circuit logic.
- High Durability: Rated for up to 10,000,000 mechanical operations, reducing maintenance intervals in high-cycling HVACR equipment.
- Flexible Mounting: Designed for standard 35mm DIN rail or screw-on surface mounting for rapid installation in control cabinets.
- Climate-Proof Design: Approved for global service with an insulation voltage rating of 690V and an IP20 protection rating.
Common Questions:
Is this a direct replacement for the 3RT1026 series?
Yes, the 3RT2026-1AC20 is the direct dimensional and electrical successor to the 3RT1026-1AC20. However, always verify that any legacy snap-on accessories are compatible with the SIRIUS 3RT2 frame before installation.
What is the maximum amperage for resistive loads (AC-1)?
While the inductive motor rating (AC-3) is 25A, this contactor is rated for up to 40 Amps for resistive loads (AC-1) at temperatures up to 40°C.
Does this unit support DC motor control?
The main contacts can switch DC-1, DC-3, and DC-5 currents, but technical data must be consulted for specific voltage de-rating and current path configurations.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Siemens 3RT2026-1AC20 Contactor is a robust, industrial-grade power contactor engineered for high-cycle motor control in HVACR and automation systems. As a core component of the SIRIUS innovation series, this Size S0 contactor is the upgraded successor to the now-obsolete 3RT1026-1AC20, offering superior reliability with a mechanical service life of up to 10 million switching cycles. This 3-pole IEC contactor is designed for a rated operational current of 25 Amps (AC-3) and features a 24V AC 50/60Hz coil, making it a standard choice for 24-volt control circuits.
Built for demanding environments, the 3RT20261AC20 utilizes screw terminals for secure, vibration-resistant wiring and is internationally finger-safe per EN 50274 standards. With a power rating of 11 kW at 400V and a maximum horsepower of 15 HP at 460V for 3-phase applications, this unit ensures stable performance for compressors, fans, and pump motors. The integrated 1NO + 1NC auxiliary contacts allow for immediate feedback and interlocking without the need for additional add-on blocks, though the S0 frame remains fully compatible with front-mount or side-mount accessories for expanded functionality.
Key Benefits:
- SIRIUS Innovation Compatibility: Seamlessly replaces the previous 3RT1026-1AC20 models with the same mounting footprint.
- Integrated Auxiliaries: Features factory-installed 1 NO + 1 NC auxiliary contacts for streamlined control circuit logic.
- High Durability: Rated for up to 10,000,000 mechanical operations, reducing maintenance intervals in high-cycling HVACR equipment.
- Flexible Mounting: Designed for standard 35mm DIN rail or screw-on surface mounting for rapid installation in control cabinets.
- Climate-Proof Design: Approved for global service with an insulation voltage rating of 690V and an IP20 protection rating.
Common Questions:
Is this a direct replacement for the 3RT1026 series?
Yes, the 3RT2026-1AC20 is the direct dimensional and electrical successor to the 3RT1026-1AC20. However, always verify that any legacy snap-on accessories are compatible with the SIRIUS 3RT2 frame before installation.
What is the maximum amperage for resistive loads (AC-1)?
While the inductive motor rating (AC-3) is 25A, this contactor is rated for up to 40 Amps for resistive loads (AC-1) at temperatures up to 40°C.
Does this unit support DC motor control?
The main contacts can switch DC-1, DC-3, and DC-5 currents, but technical data must be consulted for specific voltage de-rating and current path configurations.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












