3RT2023-1BB44

The 3RT2023-1BB44 uses a DC24V coil and traditional threaded terminals. It comes standard with 2 sets of normally open and 2 sets of normally closed auxiliary contacts. The main circuit has a rated current of 9A and a power of 4kW at 400V.

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Product Introduction

Product Positioning

The 3RT2023-1BB44 is the standard model in the SIRIUS 3RT2 S0 frame contactor series. It features a DC24V coil with traditional threaded terminals and is one of the most recognizable and widely available basic models in the series. The main circuit has a rated current of 9A (AC-3), a rated power of 4kW at 400V, and up to 7.5kW at 690V. All three main contacts are normally open. The auxiliary contacts include 2 sets of normally open and 2 sets of normally closed contacts, totaling 4 sets. This doubles the auxiliary circuit of the standard 1NO+1NC version, making it suitable for control panel designs requiring multiple signals such as self-holding, interlocking, and remote indication. This reduces the cost and installation space required for additional auxiliary contact modules.

Core Product Advantages and Features

4 sets of auxiliary contacts (2 NO + 2 NC)

It provides four sets of auxiliary contacts: two normally open and two normally closed, which can simultaneously meet multiple needs such as self-holding circuits, interlocking signals, and operation indications.

DC24V coil

The coil has a rated voltage of 24V DC and an operating voltage range of approximately 0.8 to 1.1 times the rated value, making it suitable for direct drive via PLC output or DC power supply.

Traditional threaded terminals

Both the main circuit and the auxiliary circuit are secured with threaded terminals, making the wires less prone to loosening after being locked in place. This design is suitable for production line equipment that requires long-term stable operation.

S0 frame, AC-3 9A/4kW

The AC-3 three-pole main contact has a rated current of 9A, a rated power of 4kW at 400V, complies with IEC/EN 60947-4-1, and has a mechanical life of 10 million cycles.

project	Specification
model	3RT2023-1BB44
Coil rated voltage	DC 24 V
Coil type	DC electromagnetic coil
Auxiliary contact configuration	2 NO + 2 NC (Instantaneous Type)
Wiring method	Screw terminal
Rated operating current Ie (AC-3, 400V)	9 A
Rated operating power (AC-3, 400V)	4 kW
Rated operating power (AC-3, 690V)	7.5 kW
Main contact pole number	3-pole (3NO)
Contactor size class	S0
External dimensions (width x height x depth)	45 x 85 mm, depth approximately 97 mm (AC coil) or 107 mm (DC coil) depending on coil type.
Rated insulation voltage Ui	690 V
Mechanical life	10 million cycles
Protection level	IP20 (Front-side touch protection, conforms to finger-proof electric shock structure)