Siemens 3TB40 10-0XM0 AC Contactor
The Siemens 3TB40 10-0XM0 is a highly reliable 3-pole AC contactor designed for efficient motor control and power switching applications. Manufactured by Siemens Electrical Apparatus Ltd., this contactor features 1 Normally Open (1 NO) auxiliary contact and operates with a coil control voltage of 220V AC at 50Hz (or 264V AC at 60Hz). With a rated operational voltage up to 660V and a conventional thermal current (Ith) of 20A, it delivers robust performance for demanding industrial environments. The AC-3 rated current is 9A, supporting motor power ratings from 2.2 kW up to 5.5 kW depending on the voltage. It fully complies with international standards, including IEC 60947-4-1 and GB/T 14048.4, ensuring safety, longevity, and seamless integration into your electrical control panels.
Technical Specifications:
- Brand: Siemens
- Model: 3TB40 10-0XM0 (10E)
- Pole Configuration: 3-Pole (1L1, 3L2, 5L3 / 2T1, 4T2, 6T3)
- Auxiliary Contacts: 1 NO (13NO-14NO)
- Coil Control Voltage (Us): AC 220V 50Hz / 264V 60Hz
- Rated Operational Voltage (Ue): Up to 660V
- Conventional Thermal Current (Ith): 20A
- AC-3 Rated Operational Current (Ie): 9A
- Motor Power Ratings (kW): 2.2 kW (220V) / 4 kW (380V) / 4.5 kW (415V) / 5.5 kW (500V/660V)
- Motor Power Ratings (HP): 3 HP (220V) / 5.5 HP (380V) / 6.5 HP (415V) / 7.5 HP (500V/660V)
- Standards Compliance: IEC 60947-4-1, GB/T 14048.4

| Brand | Siemens |
|---|---|
| Model | 3TB40 10-0XM0 |
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Siemens 3TB40 10-0XM0 AC Contactor
Shop the Siemens 3TB40 10-0XM0 AC Contactor. Featuring a 3-pole design, 9A AC-3 rating, 1NO auxiliary contact, and a 220V 50Hz coil. Ideal for reliable industrial motor control up to 5.5kW. Genuine Siemens quality, IEC compliant, and ready for fast installation.

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