Product Specifications

Manufacturer	Siemens
Product Model	3TY7540-0A
Net Weight	0.38 kg
Matched Contactor	Siemens 3TF54
Number of Poles	3
Movable Contacts	3
Rated Operational Voltage (Ue)	Up to 690 V AC
Rated Insulation Voltage (Ui)	690 V AC

The Siemens 3TY7540-0A is a main contact element (contact kit) designed specifically for use with the 3TF54 contactor series. It plays a critical role in ensuring reliable electrical switching and circuit continuity within motor control and industrial power distribution systems.
Although sometimes associated with protection functions in control systems, this model is not a standalone leakage protection module. Instead, it is a mechanical-electrical contact replacement kit consisting of 3 movable contacts and 6 fixed contacts, used to restore or maintain the performance of contactors.

Frequently asked questions：

Q1: What is the Siemens 3TY7540-0A?
A1: It is a leakage protection module designed to detect leakage currents and provide protective disconnection in electrical systems, enhancing safety and equipment protection.

Q2: How many poles does this 3TY7540-0A module have?
A2: The 3TY7540-0A module is a 3-pole device, suitable for three-phase electrical systems.

Q3: How many movable contacts are included?
A3: It features 3 movable contacts, enabling effective switching and protection functionality.

Q4: What is the 3TY7540-0A rated operational voltage (Ue)?
A4: The 3TY7540-0A module supports a rated operational voltage of up to 690 V AC.

Q5: What is the 3TY7540-0A rated insulation voltage (Ui)?
A5: The insulation voltage is rated at 690 V AC, ensuring reliable electrical insulation and safety.

Product Applications

Power and energy plants
Steel and metallurgical industry
Elevators and building equipment
Water treatment and mining plants

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We provide a 12-month warranty and worldwide stock availability to guarantee smooth integration and prompt delivery for your daily operations.

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What we can supply you?

We offer quality products of a wide range of brands, enabling the parts that meet your replacement needs can be found.
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