Home › Manufacturers › Siemens › 3RT2018-2CP04-3MA0

Siemens

Siemens 3RT2018-2CP04-3MA0 16A Contactor – 230V AC Coil

Siemens 3RT2018-2CP04-3MA0 16A Power Contactor with 230V AC coil and varistor.

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerSiemens

Part number3RT2018-2CP04-3MA0

Type Power Contactor

AC-3e/AC-3 Rating 16A

Power 7.5 kW / 400 V

Poles 3

Get a price for 3RT2018-2CP04-3MA0

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

AC-3e/AC-3 rated 16A current 7.5kW power 230V AC coil Integrated varistor 2 NO + 2 NC auxiliary contacts Size S00

Product description

The Siemens 3RT2018-2CP04-3MA0 is a robust 3-pole power contactor rated for AC-3e/AC-3 applications, handling 16A and 7.5 kW at 400V. This model features a 230V AC coil for standard industrial power systems and includes a varistor for surge suppression. It is equipped with 2 normally open (NO) and 2 normally closed (NC) auxiliary contacts, spring-loaded terminals, and is size S00, complete with a captive auxiliary switch.

This contactor is designed for reliable switching of motor loads and other inductive or resistive loads in various industrial settings. The integrated varistor protects the coil from voltage spikes, enhancing longevity and operational stability.

Find the Siemens 3RT2018-2CP04-3MA0 at Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts. We offer quality components and efficient service to minimize downtime.

Technical specifications

Type	Power Contactor
AC-3e/AC-3 Rating	16A
Power	7.5 kW / 400 V
Poles	3
Coil Voltage	230 V AC (50/60 Hz)
Varistor	Yes
Auxiliary Contacts	2 NO + 2 NC
Terminals	Spring-loaded
Size	S00
Captive Auxiliary Switch	Yes

Common applications

Motor control

Industrial automation

Control panels

Switching inductive loads

Surge protection

Compatible systems

Compatible with Siemens 3RH21 auxiliary contact blocks and SIRIUS motor protection devices.

Also known as

Siemens 3RT2018 AC Contactor Siemens Contactor S00 230V 3RT2018-2CP04

Replaces / compatible with

This contactor is suitable for applications requiring AC coil operation with surge suppression, replacing standard 3RT20 series contactors with similar ratings.

Technical note

Expert tip

The integrated varistor provides a degree of protection against voltage spikes, but for critical applications, external surge protection may still be advisable.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

Does the Siemens 3RT2018-2CP04-3MA0 have surge protection?

Yes, the Siemens 3RT2018-2CP04-3MA0 power contactor comes with a built-in varistor (surge suppressor). This feature helps protect the coil from transient overvoltages, increasing the lifespan of the component.