3RT2018-2AN21

The S00 miniature AC coil contactor is a 220V AC (50/60Hz) coil compatible with Taiwan 220V control power supplies. It features spring-loaded terminals with one set of normally open auxiliary contacts. The main contacts are AC-3 rated at 16A and 7.5kW (400V). Net weight is approximately 0.26kg.

Share To

Siemens 3RT2018-2AN21 220V AC Coil 1NO Spring Terminal AC-3 16A/7.5kW

Product Positioning

The 3RT2018-2AN21 belongs to the SIRIUS 3RT20 S00 frame AC coil contactor. The coil specification is 220V AC, compatible with 50Hz and 60Hz. The voltage level is close to the common 220V single-phase control power supply in Taiwanese factories, eliminating the need for additional step-down or rectifier conversion devices. The terminals adopt a spring-loaded design with one set of normally open auxiliary contacts for easy feedback of the contactor's operating status. The main circuit AC-3 is rated at 16A, 7.5kW (400V). While it shares the same AC coil design as the 2AP01, the coil voltage differs. When selecting, it can be chosen according to the existing power supply voltage (220V or 230V) of the control box, avoiding the need for an additional power module.

Core Product Advantages and Features

220V AC coil, universal 50/60Hz

The coil voltage is close to the common 220V control power supply in Taiwan, eliminating the need for additional transformer or rectifier devices.

1 set of normally open auxiliary contacts

The contactor's operating status can be fed back, facilitating integration into motor control and monitoring systems.

Spring-type terminals

Screwless, quick-connect wiring; vibration resistant and highly stable over long-term use.

S00 Small Frame

Compact size, 35 mm DIN rail mounting, suitable for control box configurations with limited space.

project	Specification
Product Series	SIRIUS 3RT20, frame size S00
Extreme number	3 poles (3 normally open main contacts)
AC-3 Rated Current/Power (400V)	16 A / 7.5 kW
Coil Specifications	220V AC, compatible with 50Hz/60Hz.
auxiliary contacts	1 normally open (1NO) group
Terminal type	Spring-loaded terminals (main circuit/auxiliary/coil)
External dimensions (height × width × depth)	70 × 45 × 73 mm
net weight	Approximately 0.26 kg
Operating temperature range	-25°C ~ +60°C
Insulation voltage/contact withstand voltage	690 V
Certification Standards	IEC 60947 series, UL, CSA, CE, UKCA
Installation method	35 mm DIN rail

Recommend

3RT2018-2AP01

S00 frame AC coil contactor, 230V AC (50/60Hz), the coil can be directly connected to the control power supply without an additional step-down transformer, one set of normally open auxiliary contacts with spring terminals, main circuit AC-3 rated 16A/7.5kW (400V), net weight only 0.254kg.

3RT2018-1FB42

S00 frame screw terminal contactor, 24V DC coil with built-in suppression diode to reduce power failure surge, 1 set of normally closed auxiliary contacts suitable for interlock protection circuits, main circuit AC-3 rated 16A, power 7.5kW (400V).

3RT2018-1FB41

S00 frame screw terminal contactor, 24V DC coil with built-in suppressed diode, one set of normally open auxiliary contacts for start feedback signal, main contacts AC-3 rated 16A, power 7.5kW (400V), net weight approximately 0.295kg.