3RT1375-6AF36

The 3RT1375-6AF36 is a Siemens SIRIUS 3RT.3 series 4-pole large power contactor. The AC-1 series has a maximum rated current of 525A, a main circuit withstand voltage of 1000V, and a coil voltage of 110-127V AC/DC. It features 2 NO + 2 NC auxiliary contacts and is suitable for heavy-duty motor control and large switchboard applications.

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Siemens SIRIUS 3RT1375-6AF36 4-pole large power contactor

Product Positioning

The 3RT1375-6AF36 is a large 4-pole power contactor from the Siemens SIRIUS 3RT.3 series. It can handle up to 525A of AC-1 rated current within the series, and its main circuit withstand voltage reaches 1000V, making it suitable for ultra-high current motor control and special power distribution applications. This model has a coil voltage of 110-127V AC/DC and features 2NO+2NC auxiliary contacts for stable and reliable switching. Kenxin Motor is an authorized Siemens distributor, providing genuine products and technical consultation services.

Core Product Advantages and Features

4-dimensional large frame design

With 4 sets of main contacts, it is suitable for special circuits with high current three-phase or higher and large-scale power distribution applications.

AC-1 rated maximum 525A

The AC-1 model of the same series, 3RT1375, has a rated current of up to 525A and a main circuit withstand voltage of 1000V.

110-127V AC/DC coil

The coil is compatible with both AC and DC power supplies, making it easy to match different control circuit voltage specifications.

2NO+2NC auxiliary contacts

Standard configuration includes 2 sets of normally open and 2 sets of normally closed auxiliary contacts for easy interlocking control and status feedback.

Connecting main circuit terminals

The main circuit adopts a connector/screw terminal design, suitable for ultra-high current wiring applications.

Authorized agents guarantee genuine products

Kenxin Motors provides genuine Siemens parts and complete selection technical support.

project	Specification
brand	Siemens
series	SIRIUS 3RT.3
model	3RT1375-6AF36
Extreme number	4 poles
AC-1 rated current (same series)	525 A (400V/40°C)
Main circuit withstand voltage	1000 V
Control circuit voltage range (same series)	250-500 V AC/DC (0.85-1.1Uc)
coil voltage	110-127 V AC/DC (50-60Hz)
Auxiliary contact	2 NO + 2 NC
External dimensions (within the same series)	212×262×212 mm
Reference weight (within the same series)	6.442 kg

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The 3RT1456-6AB30 is a member of the Siemens SIRIUS S6 frame large power contactor series. It is a 3-pole contactor, with a maximum rated capacity of 275A/690V for the AC-1 series. It features 2NO+2NC auxiliary contacts and main circuit busbar connection, making it suitable for high-current motor control and power distribution spare parts replacement. Precise coil voltage confirmation is recommended.

3RT1336-1AN20

The 3RT1336-1AN20 is a Siemens SIRIUS S2 frame 4-pole contactor with 4 normally open main contacts. AC-1 is rated 55A/220V, and AC-3 is rated 26A/400V. The coil operates at 220V AC. It uses screw terminal connections and is suitable for medium to large motor control circuits. It is discontinued and has been replaced by the 3RT2336-1AN20.