3RT2016-1JB42

The Siemens SIRIUS S00 coupled power contactor features a 24V DC coil with a suppressed diode, one set of normally closed auxiliary contacts, and an AC-3 9A/4kW rating. It is suitable as an isolation element between the PLC digital output and the main circuit.

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Siemens 3RT2016-1JB42 Coupled Contactor 24VDC 1NC 9A

Product Positioning

The 3RT2016-1JB42 is a coupling power contactor in the Siemens SIRIUS 3RT20 series. It is designed as an interface between the PLC digital output and the main circuit. The coil is 24V DC and has a built-in suppressor diode to reduce the reverse induced voltage generated when the coil is de-energized, minimizing the impact on the PLC output module or surrounding electronic circuits. This model has a fixed auxiliary contact configuration of one normally closed (1NC) group, which is the factory-installed specification and cannot be replaced with an auxiliary contact module. The main circuit can directly switch three-phase loads of AC-3 9A, 400V/4kW. Its size is maintained within the smallest SIRIUS S00 housing, making it easy to install in existing control boxes or distribution panels.

Core Product Advantages and Features

Built-in suppression diode

The 24V DC coil integrates a freewheeling diode, which can reduce back electromotive force during switching and protect the PLC output terminal and control circuit components.

Fixed 1NC auxiliary contact

It comes with one set of normally closed auxiliary contacts for use in feedback signals or interlocking circuits, and no expansion modules can be added.

AC-3 9A/4kW main circuit

The 3-pole main contacts can directly switch 400V, 9A (AC-3) three-phase motors or loads, in accordance with IEC 60947-5-1 specifications.

S00 Ultra-compact casing

The standard 45×58×73mm frame can be directly inserted into a 35mm DIN rail or fixed to the panel with screws.

project	Specification
Rated current of main circuit (AC-3)	9 A
Rated power (400V, AC-3)	4 kW
Extreme number	3-pole (3P)
Coil Specifications	24 V DC, built-in suppression diode
Auxiliary contact	1 NC, factory fixed and cannot be retrofitted.
Auxiliary contact capacity (AC-15, 230V)	10 A
Rated insulation voltage	690 V
Enclosure protection rating	IP20
Terminal blocks	Screw terminals, wire cross-sectional area 0.5–4 mm²
Dimensions of the outer casing (width × height × depth)	45×58×73 mm
Casing Specifications	S00
Mechanical life	30 million operation cycles
Operating ambient temperature	-25°C ~ +60°C
Safety certification	CE, UL, CSA, CCC, EAC
Place of origin	Germany

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3RT2016-1KB41

The Siemens SIRIUS 3RT2016-1KB41 is a 24V DC coupled contactor with an operating range of 0.7 to 1.25 times the rated voltage. It has a built-in suppressed diode and is suitable for PLC output drive. It comes with one set of normally open auxiliary contacts and screw terminals. The AC-3 rated voltage is 9A/4kW/400V.

3RT2016-1JB41

The SIRIUS S00 coupled power contactor features a 24V DC coil with diode protection, one set of fixed, non-expandable normally open auxiliary contacts, AC-3 9A/4kW, and weighs only about 0.297kg, making it suitable for PLC output switching applications.

3RT2016-1HB42

SIRIUS S00 interface type power contactor, 24V DC coil driven, fixed with 1 set of normally closed auxiliary contacts that cannot be added, AC-3 9A/4kW, net weight approximately 0.298kg, designed specifically for PLC output direct drive applications.