Siemens 3RT1966-4EA1 Contactor Cover Plate Protector

The Siemens 3RT1966-4EA1 is an essential accessory designed to enhance the safety and functionality of Siemens SIRIUS contactors, specifically those in frame sizes S10 and S12. This terminal cover serves a dual purpose: providing crucial touch protection for busbar connections and enclosed box terminals, while also ensuring compliance with necessary voltage clearance requirements. Its robust construction and straightforward integration make it a vital component for electrical installations demanding high reliability and safety standards. The product is an active component within the Siemens portfolio, indicating ongoing support and availability.

Product Specifications

| Feature                       | Specification                                                                                                         |

| :---------------------------- | :-------------------------------------------------------------------------------------------------------------------- |

| Product Number                | 3RT1966-4EA1                                                                                                          |

| Product Brand Name            | SIRIUS                                                                                                                |

| Product Category              | Terminal Covers                                                                                                       |

| Product Designation           | Terminal Cover                                                                                                        |

| Design of the Product         | Length 120 mm, for complying with voltage clearances and as touch protection. Two units are required per contactor.   |

| Suitable for                  | Frame sizes S10 and S12 contactors (3RT1, 3RB2, 3RW4, 3RW507), also for mounted box terminals and 3UF71.4-1BA00-0 or 3RW444. |

| Net Weight                    | Approximately 0.121 kg - 0.122 kg                                                                                     |

| Packaging Dimensions (L x W x H) | 146.00 x 128.00 x 67.00 mm                                                                                              |

| RoHS Compliant                | Yes                                                                                                                   |

| RoHS Phthalates Compliant     | Yes                                                                                                                   |

| Substance Prohibitance Date   | 07/01/2006                                                                                                            |

| Product Lifecycle Status      | Active Product                                                                                                        |

Core Features & Market Positioning

The Siemens 3RT1966-4EA1 distinguishes itself through its integral role in safety and regulatory compliance within industrial electrical systems. As a standard product, it benefits from Siemens' established reputation for quality and reliability in the SIRIUS industrial controls range. Its primary function as a terminal cover for busbar connections and box terminals directly addresses the critical need for preventing accidental contact with live components, a paramount concern in electrical safety. The product's design explicitly caters to specific Siemens contactor sizes (S10 and S12), ensuring a precise fit and optimal performance when paired with compatible devices. This specificity positions it as a crucial, yet often overlooked, component for system integrators and maintenance professionals seeking to maintain the integrity and safety of their installations. Its adherence to RoHS compliance further aligns it with global environmental and health standards, reinforcing its market viability for a wide range of applications.

Key Application Scenarios

The Siemens 3RT1966-4EA1 terminal cover is predominantly applied in industrial settings where Siemens SIRIUS contactors of frame sizes S10 and S12 are utilized for motor control and power switching applications. This includes, but is not limited to, manufacturing plants, process industries, and building automation systems. It is particularly essential in applications where open busbar connections or exposed box terminals pose a risk of electrical shock or short circuits. Users commonly search for this product when configuring new control panels, performing maintenance on existing electrical infrastructure, or upgrading systems to meet enhanced safety regulations. Its compatibility with various SIRIUS components, such as 3RT1, 3RB2, 3RW4, and 3RW507 devices, broadens its applicability across different power control scenarios.

Practical System Integration Guidance

Integrating the Siemens 3RT1966-4EA1 terminal cover is a straightforward process designed for efficient installation within SIRIUS control systems. Typically, two units of the cover are required per contactor to ensure complete protection of all relevant terminals and busbar connections. The cover is designed to fit securely onto the designated S10 and S12 frame size contactors or their associated box terminals. Installation involves simple mechanical fastening, ensuring it is firmly attached to prevent dislodgement during operation. For optimal system integrity, it's recommended to consult the specific datasheets and installation manuals for the contactors and related components to confirm precise mounting procedures and any necessary clearances. Proper installation guarantees that the cover effectively provides touch protection and maintains required electrical insulation distances, contributing to overall system safety and compliance.

Operation and Risk Mitigation

The primary function of the Siemens 3RT1966-4EA1 is to mitigate operational risks associated with electrical hazards. By enclosing accessible busbar connections and box terminals, it prevents inadvertent contact by personnel, thereby significantly reducing the likelihood of electrical shock and arc flash incidents. This protective measure is critical during routine operation, maintenance, and troubleshooting activities. Proper installation ensures that the cover maintains its protective integrity, preventing dust, debris, or foreign objects from compromising the electrical connections, which could otherwise lead to short circuits or equipment failure. While the cover itself is a passive safety component, its correct application is fundamental to achieving a safer working environment and reducing the probability of electrical-related accidents within industrial control systems.

Scalability & Long-Term Value

The Siemens 3RT1966-4EA1 terminal cover embodies long-term value through its integration within the scalable SIRIUS modular system. As an active product, it benefits from ongoing Siemens development and support, ensuring its continued relevance and compatibility with newer iterations of SIRIUS contactors and related control gear. Its design is intended to be robust and durable, offering lasting protection throughout the operational lifespan of the associated contactors. This longevity minimizes the need for frequent replacements, contributing to reduced maintenance costs and operational downtime. Furthermore, by adhering to established safety standards, the 3RT1966-4EA1 helps maintain the overall safety compliance of an installation, which is crucial for scalability and future system expansions or upgrades within the Siemens automation ecosystem.

Frequently Asked Questions

What is the primary function of the Siemens 3RT1966-4EA1?

The Siemens 3RT1966-4EA1 serves as a crucial terminal cover for specific Siemens SIRIUS contactors. Its main purpose is to provide essential touch protection for exposed busbar connections and box terminals. This significantly enhances electrical safety by preventing accidental human contact with live components.

This cover also plays a vital role in maintaining the required voltage clearances within electrical enclosures. By ensuring proper insulation distances, it helps prevent short circuits and electrical faults. Its application is mandated for certain contactor frame sizes to meet safety standards.

The 3RT1966-4EA1 ensures that installations comply with safety regulations, reducing the risk of electrical shock and arc flash incidents. It is an indispensable accessory for secure and reliable electrical system design.

Which Siemens contactor sizes are compatible with the 3RT1966-4EA1?

The Siemens 3RT1966-4EA1 terminal cover is specifically designed for use with Siemens SIRIUS contactors in frame sizes S10 and S12. It is compatible with various models within these size categories, including those from the 3RT1, 3RB2, and 3RW4 series.

This cover can also be applied to mounted box terminals associated with these contactors. Additionally, it is suitable for use with specific components like the 3UF71.4-1BA00-0 or 3RW444. Always verify compatibility with your specific contactor model.

Precise compatibility ensures effective touch protection and adherence to electrical safety clearances. Using the correct cover is fundamental for maintaining system integrity and operational safety.

How many Siemens 3RT1966-4EA1 covers are needed per contactor?

Typically, two units of the Siemens 3RT1966-4EA1 terminal cover are recommended for each contactor. This ensures comprehensive protection across all relevant busbar connections and exposed terminals.

The design of these contactors often necessitates covering multiple connection points. Therefore, using two covers ensures complete enclosure and adherence to safety standards.

Following the manufacturer's guidelines for the number of covers required is crucial for achieving the intended safety and protective benefits. This ensures full compliance and minimizes electrical hazards.

What are the main benefits of using the 3RT1966-4EA1?

The primary benefit is enhanced electrical safety by preventing accidental contact with live terminals. This significantly reduces the risk of electric shock and potential injuries.

Another key advantage is ensuring compliance with electrical safety regulations and standards. The cover helps maintain necessary voltage clearances within control panels and cabinets.

Furthermore, it protects the connections from environmental factors like dust and moisture, preventing short circuits and improving the longevity of the contactor and associated components.

Is the Siemens 3RT1966-4EA1 RoHS compliant?

Yes, the Siemens 3RT1966-4EA1 terminal cover is compliant with RoHS (Restriction of Hazardous Substances) directives. This means it adheres to regulations limiting the use of specific hazardous materials in electrical and electronic equipment.

The product also meets RoHS Phthalates compliance, further indicating its adherence to environmental and health standards. This is important for global market access and responsible manufacturing practices.

Compliance with RoHS ensures that the product can be safely used in various regions and industries that enforce these environmental regulations, contributing to a more sustainable electrical infrastructure.

What is the physical size and weight of the 3RT1966-4EA1?

The terminal cover has a length of approximately 120 mm. Its packaging dimensions are typically around 146.00 mm (Length) x 128.00 mm (Width) x 67.00 mm (Height).

The net weight of a single unit is approximately 0.121 kg to 0.122 kg. This lightweight design facilitates easy handling and installation without adding significant bulk.

These dimensions and weight are typical for protective accessories designed to fit specific industrial components without causing obstruction or interfering with overall panel layout.

Can the 3RT1966-4EA1 be used with other Siemens SIRIUS components?

Yes, the 3RT1966-4EA1 is designed for compatibility with a range of Siemens SIRIUS components beyond just S10 and S12 contactors. It is suitable for use with 3RT1, 3RB2, 3RW4, and 3RW507 devices.

It can also be utilized with mounted box terminals and specific components like the 3UF71.4-1BA00-0 or 3RW444. This broadens its application scope within the SIRIUS ecosystem.

Always refer to the official Siemens documentation or product datasheets for the most accurate compatibility information to ensure proper system integration and safety.

What is the product lifecycle status of the 3RT1966-4EA1?

The Siemens 3RT1966-4EA1 is classified as an "Active Product." This designation indicates that it is currently in production, supported by Siemens, and readily available through their distribution channels.

Active product status ensures that users can procure this component with confidence, knowing it is a current offering and not nearing obsolescence. It also implies continued technical support and documentation availability.

This status is crucial for long-term projects and maintenance, as it guarantees the continued supply of essential accessories for Siemens SIRIUS control systems.

What kind of documentation is available for the 3RT1966-4EA1?

Extensive documentation is available for the Siemens 3RT1966-4EA1, including detailed product data sheets. These documents provide comprehensive technical specifications and application information.

Users can also access related catalogs, brochures, and installation manuals through the Siemens Industry Mall and Information- and Downloadcenter. CAD models for design purposes are also available.

Support resources, including FAQs and certificates (such as general product approval, EMV, and environmental confirmations), can be found via Siemens' Service & Support portal.

How does this cover contribute to operational efficiency?

By ensuring reliable protection, the cover reduces the likelihood of unexpected electrical faults or contactor failures caused by external factors. This minimizes unplanned downtime and costly repairs.

Its straightforward installation also contributes to efficiency during panel building and maintenance procedures. The quick attachment saves valuable time for technicians.

Ultimately, by upholding safety standards and preventing equipment damage, the 3RT1966-4EA1 supports smoother, more continuous industrial operations, leading to increased overall productivity.