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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TH4355-0AP0 |
| Alternative Part Number | 3TH43550AP0 |
| Manufacturer | Siemens |
| Product Type | Contactor Relay |
| Contact Configuration | 5 NO (Normally Open) + 5 NC (Normally Closed) |
| Terminal Type | Screw Terminal |
| Operating Voltage | 277 V ac at 60 Hz, 230 V ac at 50 Hz |
| Ambient Operating Temperature | -25 ... +55 °C |
| Protection Class | IP20 on the front |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022 |
| Dimensions (Width x Height x Depth) | 55 mm x 78 mm x 102 mm |
| Control Circuit Voltage Type | AC |
| Auxiliary Circuit Operating Current | 10 A at 230 V ac (AC-15), 6 A at 400 V ac (AC-15) |
| Identification Number and Letter for Switching Elements | 55 E |
| Commodity Code | 853649 |
| Safety Related Data | B10 value with high demand rate according to SN 31920: 1,000,000; T1 value for proof test interval or service life according to IEC 61508: 20 years |
| Protection Against Electrical Shock | Finger-safe |
The Siemens 3TH4355-0AP0 is a robust contactor relay designed to meet the demands of industrial control applications. This component is engineered to facilitate reliable switching of control signals within electrical circuits. It features a configuration of 5 normally open (NO) and 5 normally closed (NC) contacts, providing versatility for various wiring strategies.
Constructed to comply with EN 50011 standards, the 3TH4355-0AP0 is suitable for a wide range of operating temperatures, from -25 to +55 degrees Celsius, ensuring performance in diverse environmental conditions. The contactor relay operates with an AC control supply voltage, with rated values of 230 V at 50 Hz and 277 V at 60 Hz, making it adaptable to different power supply systems.
The device boasts a finger-safe design, enhancing safety during installation and maintenance. It is also characterised by a B10 value with a high demand rate according to SN 31920, indicating a long service life with a T1 value for proof test interval or service life according to IEC 61508 of 20 years.
With a compact form factor, the 3TH4355-0AP0 has dimensions that allow for efficient use of space within control cabinets. It features screw-type terminals for secure and straightforward electrical connections. The contactor relay can be easily mounted onto a 35 mm standard mounting rail according to DIN EN 50022, which simplifies installation and integration into existing systems.
The Siemens 3TH4355-0AP0 is a dependable choice for those seeking a durable and efficient solution for controlling electrical circuits in industrial environments.
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Frequently Asked Questions
What type of relay is this and what are its contact configurations?
This is a contactor relay designed for controlling electrical circuits. It features a configuration of 5 normally open (NO) and 5 normally closed (NC) contacts, providing versatility for various switching applications.
Can this relay be used in safety-related applications?
Yes, the relay is suitable for safety-related applications. It has a B10 value with a high demand rate and a T1 value for proof test interval or service life, which align with safety standards.
What are the operating voltage ratings for this relay?
The relay operates at a control supply voltage of 230 V AC at 50 Hz or 277 V AC at 60 Hz, making it suitable for a range of industrial applications.
What is the ambient temperature range for operating this relay?
The relay is designed to operate within an ambient temperature range of -25 to +55 degrees Celsius, ensuring reliable performance in various environmental conditions.
What type of terminals does this relay have for electrical connections?
It is equipped with screw-type terminals, which provide a secure and reliable connection for both auxiliary and control current circuits.
How can this relay be mounted?
The relay can be mounted using screws or by snapping onto a 35 mm standard mounting rail according to DIN EN 50022, offering flexibility in installation.
What is the protection class for the front of this relay?
The front of the relay has a protection class of IP20, which provides a degree of protection against solid objects but not against water.
What is the significance of the '55E' identification number for this relay?
The '55E' identification number refers to the specific switching element classification of the relay, which helps in identifying the operational characteristics and compatibility with other devices.
What is the operational current rating for this relay at AC-15?
The operational current rating for this relay at AC-15 is 10 A at 230 V and 6 A at 400 V, which indicates its switching capacity for different voltage levels.
How does the finger-safe feature contribute to the relay's safety?
The finger-safe feature of the relay ensures that the contacts are designed to prevent accidental touching, enhancing the safety for individuals working with or near the relay.
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