3TH20-40-OAK6 SIEMENS Control Relay Box

Review SIEMENS Lot Of Control Relay New In Box

The Siemens 3TH20-40-OAK6 3TH20-40-0AK6 Control Relay Box is a versatile and reliable solution for automating electrical systems in various industrial applications. Designed and manufactured by Siemens, a global leader in electrotechnology, this control relay box offers superior performance, durability, and ease of use.

The 3TH20-40-OAK6 Control Relay Box is a compact, wall-mounted device that measures 348 mm in width, 281 mm in height, and 80 mm in depth. It features 40 NO (Normally Open) and 40 NC (Normally Closed) changeover contacts, each with a contact rating of 20 Amperes at 250 Volts AC or 30 Volts DC. This makes it an ideal choice for applications requiring a large number of contacts for controlling various loads.

The relay box is built with high-quality components and robust construction to ensure long-lasting performance even in harsh environments. It is constructed of aluminum, which offers excellent thermal conductivity, dissipating heat effectively to maintain optimal operating temperature. The device also features a protective coating that shields it against dust, water, and other environmental hazards, making it suitable for use in industrial settings.

The 3TH20-40-OAK6 Control Relay Box is easy to install and integrate into existing electrical systems. It can be mounted on a DIN rail or directly on the wall using the provided mounting hardware. The device also comes with clear and concise wiring diagrams and operating instructions, making setup and configuration straightforward for electricians and system integrators.

The relay box offers flexible control options, allowing users to configure the contacts for various applications. Each contact can be set to operate in various modes, including momentary, normally open, and normally closed, providing greater flexibility and customization. The device also features a built-in test function, enabling users to easily verify the status and functionality of each contact.

The Siemens 3TH20-40-OAK6 3TH20-40-0AK6 Control Relay Box is a dependable and efficient solution for automating electrical systems in industrial applications. Its robust construction, high contact rating, and versatile control options make it a popular choice for electricians, system integrators, and industrial automation professionals.

The Siemens 3TH20-40-OAK6/3TH20-40-0AK6 control relay box is a commonly used component in industrial automation systems. Here are some potential pros and cons of buying this particular relay box:

1. Robust Design: Siemens is known for its high-quality and reliable products. This relay box is built to withstand harsh industrial environments, ensuring long-term durability.

2. Versatile: The relay box can handle a wide range of applications, making it a versatile option for various industrial automation systems.

3. Easy Configuration: The relay box can be easily configured using Siemens' Simatic S7-300 and S5-300 PLC systems, allowing for quick and efficient setup.

4. Large Contact Capacity: The relay box offers a large contact capacity, making it suitable for controlling multiple devices or circuits in industrial applications.

1. Cost: The Siemens relay box is more expensive than some other options in the market, which may be a deterrent for some buyers.

2. Complexity: The relay box may be more complex to install and configure compared to simpler options, requiring additional time and resources.

3. Size: The relay box is larger than some other options, which may require more space in the control cabinet or on the installation site.

In conclusion, the Siemens 3TH20-40-OAK6/3TH20-40-0AK6 control relay box offers several advantages, including robust design, versatility, easy configuration, and large contact capacity. However, it also comes with some potential disadvantages, such as cost, complexity, and size. Ultimately, the decision to buy this relay box will depend on the specific needs and budget of the industrial automation system. If the system requires a reliable and versatile solution with a large contact capacity, then the Siemens relay box may be a worthwhile investment. However, if cost or space is a major concern, then other options may be more suitable.

Details:

Lot of 2 Siemens 3TH20-40-0AK6 control relays, brand new in box. Made in germany shipped USPS ground advantage.

specifications genpurrelays:

• brand: Siemens
• mpn: 3th20-40-oak6
• part type: Control Box
• country of origin: Germany

offer genpurrelays:

• sold #: 17
• options: ship-to-home
• availability: in stock
• in stock #: 2
• best offers: true
• prices: $114.80–$297.00
• item condition: New
• started: december 18, 2025

payments genpurrelays:

• other
• wallet: google-pay
• credit card: discover

returns genpurrelays:

• paid by: buyer
• policy: returns accepted
• time: 30 days
• method: money back

seller genpurrelays:

• rating: 99.8%
• # reviews: 1727
• city: lake elsinore, california

shipping genpurrelays:

• carrier: usps
• type: fixed
• service: usps ground advantage
• class: standard
• transit: 5-12 days

general genpurrelays:

• category: Business & Industrial > Electrical Equipment Supplies > General Purpose Relays