Overview
The Siemens 3RT1026-1A is an IEC-rated SIRIUS 3-pole contactor designed for industrial motor control applications. Rated for 25 AMPS AC-3 and 40 AMPS AC-1, with 7.5 HP at 230V and 15 HP at 460V 3-phase operation and AC coil voltage, this compact contactor provides reliable switching for motor starters, pump controllers, and compressor applications. The unit features screw terminals and is designed for long service life in demanding industrial environments.
Key Features
- 3-pole contactor configuration for 3-phase motor control
- 25A continuous rating (AC-3) with 40A peak capacity (AC-1)
- DIN rail mounting with compact footprint
- Screw terminal connections for secure wiring
- IEC 60946 compliant design and construction
- Compatible with 3RH1921 auxiliary contact blocks and 3RU1126 thermal overload relays
Technical Specifications
- Contactor Type: 3-Pole IEC SIRIUS 3RT10
- Current Rating: 25A AC-3, 40A AC-1
- Horsepower (3-Phase): 7.5 HP @ 230V; 15 HP @ 460V
- Voltage Class: 460V rated
- Coil Type: AC
- Terminal Style: Screw Connection
- Mounting: 35 mm DIN Rail
- Standards: IEC 60946
- Condition: New – Open Box
Typical Applications
The 3RT1026-1A is widely used in:
- Motor starter control circuits for 3-phase motors
- HVAC compressor and pump motor switching
- Industrial machinery automation and process control
- Machine tool motor control and protection circuits
- OEM equipment and control panel assemblies
Compatibility & Replacements
The 3RT1026-1A comes pre-installed with a 3RH1921-HA auxiliary contact block that adds 2 normally open and 2 normally closed contacts (varies by variant). The contactor is part of the Siemens SIRIUS 3RT10 family and works alongside 3RU1126 thermal overload relays and 3RH auxiliary switch blocks. Common replacement scenarios include upgrading older contactors or paralleling units for increased amperage capacity in existing panels. Always verify coil voltage and terminal configuration before replacement.
