Finder 7S.34.9.048.4310 – 7S Series Relay modules with forcibly guided contacts

Why Choose the Finder 7S.34.9.048.4310 Forcibly Guided Safety Relay?

The Finder 7S.34.9.048.4310 is a modular 48 V DC safety relay with forcibly guided contacts, designed for industrial machinery, automation systems and safety-related control circuits. Part of the Finder 7S Series, this relay combines a 3 normally open (NO) + 1 normally closed (NC) contact arrangement, a 6 A contact rating and conventional screw terminal connections in a compact DIN rail-mounted housing.

Its forcibly guided contact mechanism provides a defined mechanical relationship between the normally open and normally closed contacts. This allows appropriately designed external monitoring circuits to detect certain contact faults, including welded contacts, helping engineers incorporate diagnostic feedback into safety-related electrical systems.

The Finder 7S.34.9.048.4310 operates from a 48 V DC coil supply, making it suitable for compatible industrial control installations. Its four-contact configuration provides three normally open switching paths and one normally closed feedback path, offering flexibility for machinery control, signalling and monitored switching applications.

With silver tin oxide (AgSnO2) contacts, a 22.5 mm housing width, IP20 ingress protection and DIN rail mounting, this relay is designed for installation within professional industrial control cabinets.

The Finder 7S.34.9.048.4310 is a practical choice for machine builders, automation engineers, panel manufacturers and maintenance professionals who require a 48 V DC relay with mechanically linked contacts for appropriately engineered safety-related applications.

Key Advantages

• Forcibly guided contacts: Support detection of specified relay contact faults through suitable external monitoring circuits.
• 48 V DC coil: Designed for compatible industrial DC control supplies.
• 3 NO + 1 NC contact arrangement: Provides three normally open switching contacts and one normally closed feedback contact.
• 6 A rated contact current: Suitable for appropriately rated control and switching loads.
• Silver tin oxide contacts: Provide an industrial contact material suited to the relay's specified switching applications.
• Compact 22.5 mm width: Helps conserve space in industrial electrical cabinets.
• Screw terminal connections: Provide conventional conductor termination for panel wiring.
• DIN rail mounting: Supports straightforward installation in electrical control enclosures.
• Four-contact construction: Offers multiple switching paths within a single modular relay.
• Feedback monitoring capability: The normally closed contact can support fault detection in appropriately designed safety circuits.
• Industrial safety applications: Suitable for use as a component in machinery safety-related control systems.
• IP20 protection: Intended for installation inside suitably rated electrical cabinets.
• Italian manufacture: Listed with Italy as the country of origin.
• Finder 7S Series design: Developed for applications requiring mechanically guided relay contacts.

Key Features

• Manufacturer: Finder.
• Product series: 7S Series.
• Manufacturer part number: 7S.34.9.048.4310.
• Alternative product code: 7S3490484310.
• Product type: Modular relay with forcibly guided contacts.
• Nominal coil voltage: 48 V DC.
• Coil supply type: DC.
• Contact configuration: 3 NO + 1 NC.
• Total number of contacts: 4.
• Rated contact current: 6 A.
• Contact material: Silver tin oxide (AgSnO2).
• Contact guidance: Mechanically / forcibly guided.
• Terminal connection: Screw terminals.
• Mounting method: DIN rail.
• Housing width: 22.5 mm.
• Ingress protection: IP20.
• EAN / GTIN: 8012823420776.
• Country of origin: Italy.
• Approximate listed product weight: 0.13 kg.
• Typical applications: Industrial control, signalling and emergency-stop circuit architectures.

Technical note: The values above are supported by product listings for the exact part number. Additional parameters, including coil consumption, switching times, contact utilisation ratings, dimensions beyond width and applicable safety certifications, should be confirmed against the current Finder datasheet before being used in engineering calculations.

Forcibly Guided Contacts for Safety-Related Control Systems

The defining feature of the Finder 7S.34.9.048.4310 is its forcibly guided contact mechanism. This mechanical arrangement links the normally open and normally closed contacts so that they maintain a defined relationship under specified operating and fault conditions.

In safety-related control systems, this characteristic is useful because certain contact failures can be detected through external monitoring. For example, if a normally open contact becomes welded closed, the mechanically linked normally closed contact cannot return to its normal closed state under the relevant defined fault condition.

A properly designed feedback circuit can monitor the normally closed contact and detect the resulting discrepancy. Depending on the complete system design, the control system may then prevent an automatic restart or indicate a fault requiring investigation.

The Finder 7S.34.9.048.4310 provides three normally open contacts and one normally closed contact, allowing multiple switching paths to be combined with a feedback contact in a single relay module.

This makes the relay suitable for applications where monitored contact behaviour is required, including machinery control and safety-related output circuits.

However, a forcibly guided relay is not a complete standalone safety controller. The safety performance of a machine depends on the complete control architecture, including the input devices, monitoring logic, output stages, fault response and system validation.

3 NO + 1 NC Contact Configuration for Switching and Feedback

The Finder 7S.34.9.048.4310 features a four-contact configuration consisting of three normally open contacts and one normally closed contact.

The three NO contacts can be used for appropriately rated switching functions within industrial control circuits. The NC contact can be incorporated into an external feedback monitoring arrangement where the mechanically guided contact relationship is required.

With a 6 A rated contact current, the relay is suitable for switching compatible loads within the manufacturer's specified electrical limits. The actual permissible switching load depends on factors such as voltage, current, utilisation category, switching frequency and the characteristics of the connected equipment.

The contacts use silver tin oxide (AgSnO2), a contact material commonly used in electromechanical switching applications.

The relay's four-contact arrangement can help simplify panel layouts where several switching paths and one feedback path are required.

48 V DC Coil for Industrial Automation Systems

The Finder 7S.34.9.048.4310 is designed for a 48 V DC nominal coil supply, making it suitable for compatible industrial control systems operating at this voltage.

48 V DC control supplies are used in various industrial and specialist automation installations. Selecting the correct coil voltage is essential to ensure predictable relay operation and prevent damage caused by incorrect supply conditions.

The coil must be connected according to the manufacturer's terminal identification and wiring diagram. Designers should also confirm the coil's operating voltage limits, power consumption and any polarity requirements before installation.

When used with electronic control outputs, the output device must be capable of supplying the relay's required coil current and handling any switching transients according to the complete circuit design.

Compact DIN Rail Installation with Screw Terminals

The Finder 7S.34.9.048.4310 is designed for DIN rail mounting inside a suitable industrial electrical enclosure.

Its 22.5 mm housing width allows efficient use of space in control panels, making it suitable for machinery electrical cabinets and industrial automation assemblies.

The relay uses screw terminal connections rather than spring-loaded terminals. Conductors should be prepared and terminated according to Finder's specified conductor sizes and tightening requirements.

During installation, the normally open and normally closed contacts must be identified correctly. Where the NC contact is used for feedback monitoring, its connection and operation must be validated as part of the complete safety-related circuit.

The relay has an IP20 ingress protection rating and should be installed within a suitable enclosure. It is not intended for direct exposure to water, rain or other adverse environmental conditions.

Commissioning should include verification of the 48 V DC coil supply, contact switching behaviour, feedback monitoring and the intended response to simulated faults where required by the safety design.

Installation and maintenance should be performed by competent personnel in accordance with the manufacturer's instructions and applicable machinery safety requirements.

Typical Applications

• Industrial machinery safety-related control circuits.
• Emergency-stop control architectures with suitable external monitoring.
• Safety-related relay output circuits.
• Machine control panels.
• Industrial automation cabinets.
• Contact feedback and monitoring circuits.
• Production machinery control systems.
• Industrial conveyor equipment.
• Packaging and processing machinery.
• Material handling equipment.
• Machine tool electrical control systems.
• Industrial signalling and control circuits.
• 48 V DC control systems.
• Industrial equipment maintenance and refurbishment.
• Applications requiring three normally open contacts and one normally closed feedback contact.