3RT2026-1BG40

The 3RT2026-1BG40 uses a 125V DC coil and is a direct replacement for the 3RT1026 series contact sockets of the same specifications. It features an AC-3 rated 25A/11kW/400V main circuit, 1NO+1NC auxiliary contacts, and screw terminals, making it suitable for maintenance and replacement of DC control circuits in distribution panels.

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Siemens 3RT2026-1BG40 125V DC coil contactor 25A 11kW

Product Positioning

The 3RT2026-1BG40 uses a 125V DC coil. The manufacturer explicitly positions it as an electrically and dimensionally compatible replacement for the discontinued 3RT1026-1BG40. It is suitable for factories to directly reuse existing 125V DC control wiring during maintenance and replacement of existing distribution panels, eliminating the need for redesigning the control circuit. 125V DC is a common voltage level for some protection relay panels and DC operating power supplies in substations.

Core Product Advantages and Features

125V DC coil

It is suitable for common 125V DC operating power supply systems such as protection panels and substations.

3RT1026 Series Compatible Replacement

The manufacturer has clearly listed it as an electrical and size-compatible replacement for 3RT1026-1BG40, and replacement does not require rewiring.

AC-3 25A/11kW main circuit

It meets the start-stop control needs of most small and medium power three-phase motors.

1NO+1NC detachable auxiliary contacts

Modular auxiliary contact bases facilitate future expansion or maintenance and replacement.

project	Specification
model	3RT2026-1BG40
AC-3 rated current	25 A
AC-3 Rated Power (400V)	11 kW
Extreme number	3P
Coil Specifications	125 V DC
Auxiliary contacts	1 NO + 1 NC (detachable)
Main circuit terminals	Screw terminals
Original equipment manufacturer (OEM) compatible replacement	3RT1026-1BG40 (Discontinued older model)
Rated usage category	AC-3 (Motor Start/Stop)
Insulation voltage (pollution level 3)	690 V
Rated impulse withstand voltage	6 kV
Frontal protection level	IP20 (according to IEC 60529)
Mechanical life (typical value)	10 million cycles
Ambient operating temperature	-25°C ~ +60°C
Applicable Standards	IEC 60947-4-1 / IEC 60947-5-1
chassis code	S0
Installation method	35mm DIN rail or panel locking

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3RT2026-1BP40

The 3RT2026-1BP40 is a 230V DC coil specification. The main circuit maintains the standard AC-3 25A/11kW/400V rating, with 1NO+1NC auxiliary contacts. It is suitable for existing 230V DC control power supplies and is a spare part for existing panel retrofits or repairs that do not require additional step-down modules.

3RT2026-1BF40

The 3RT2026-1BF40 uses a 110V DC coil, with a main circuit rated AC-3 of 25A/11kW/400V, 1NO+1NC auxiliary contacts, and screw terminals. It is an electrical and dimensional compatible replacement for the discontinued 3RT1026-1BF40 and is suitable for the repair and replacement of DC control panels.

3RT2026-1BB44

Based on the standard 24V DC coil, the 3RT2026-1BB44 upgrades the auxiliary contacts to 4 points (2NO+2NC). The AC-3 rated 25A/11kW/400V remains unchanged, making it suitable for control panel designs that require multiple sets of contacts, such as indicator light feedback and interlocking circuits.