Why Choose the Finder 7S.32.9.024.5110 Safety Relay Module?
The Finder 7S.32.9.024.5110 is a professional 24 V DC safety relay module with Class A forcibly guided contacts, designed for industrial machinery, automation systems and safety-related electrical control applications. Part of the Finder Series 7S, this compact DIN rail-mounted relay features a 1 normally open (NO) + 1 normally closed (NC) contact configuration, a 6 A contact rating and conventional screw terminals.
Engineered for applications where dependable switching and contact monitoring are essential, the Finder 7S.32.9.024.5110 incorporates mechanically linked contacts that help external monitoring circuits detect certain relay faults, including welded contacts. Its forcibly guided contact arrangement is designed in accordance with EN 61810-3, making it suitable for integration into appropriately designed safety-related control systems.
The relay operates from a 24 V DC nominal coil supply and offers a 250 V AC nominal switching voltage. It features gold-plated silver-nickel contacts, an integrated LED coil status indicator and a compact 22.5 mm-wide housing suitable for installation on a standard 35 mm DIN rail.
With an operating temperature range of −40 to +70 °C, an IP20 protection rating and a mechanical endurance of 10 million operations, the Finder 7S.32.9.024.5110 provides a reliable relay interface for industrial safety monitoring, machine control and automation applications.
Key Advantages
- Class A forcibly guided contacts: Support detection of certain contact faults in properly designed safety circuits.
- 1 NO + 1 NC contact arrangement: Provides complementary switching and monitoring functionality.
- 24 V DC coil operation: Compatible with commonly used industrial control voltages.
- 6 A rated contact current: Suitable for a variety of appropriately rated control loads.
- 250 V AC nominal switching voltage: Supports industrial AC control applications.
- Screw terminal connections: Provide a familiar and secure wiring method for electrical control panels.
- Gold-plated silver-nickel contacts: Support dependable contact performance.
- Integrated LED indicator: Provides immediate visual confirmation of coil energisation.
- Compact DIN rail construction: Helps conserve space inside industrial control cabinets.
- Defined switching characteristics: Approximately 7 ms operate time and 11 ms release time.
- Wide temperature range: Designed for ambient temperatures from −40 to +70 °C.
- Long mechanical endurance: Rated for 10 million mechanical operations.
- Safety-related control compatibility: Suitable for integration into appropriately assessed and validated systems.
Key Features
- Finder Series 7S safety relay module.
- Type 7S.32 with conventional screw terminals.
- Class A forcibly guided contact technology.
- 1 normally open contact and 1 normally closed contact.
- Two-contact DPST-NO/NC configuration.
- 24 V DC nominal coil voltage.
- 16.8 V DC specified must-operate voltage.
- 2.4 V DC specified must-release voltage.
- 38.2 mA rated coil current.
- 0.9 W nominal coil consumption.
- Approximately 628.3 Ω coil resistance.
- 6 A rated contact current.
- 250 V AC nominal switching voltage.
- 1,500 VA rated switching capacity.
- Silver-nickel contacts with gold plating.
- 7 ms operate time.
- 11 ms release time.
- Integrated LED coil status indicator.
- Conventional screw terminal connections.
- 35 mm DIN rail mounting.
- 22.5 mm nominal housing width.
- IP20 ingress protection.
- −40 to +70 °C operating temperature range.
- 10 million mechanical operations.
- RoHS-compliant construction.
Technical Specifications
- Manufacturer: Finder
- Series: 7S
- Product code: 7S.32.9.024.5110
- Product type: Relay module with forcibly guided contacts
- Contact configuration: 1 NO + 1 NC
- Number of contacts: 2
- Contact form: DPST-NO/NC, 1 Form A + 1 Form B
- Contact guidance: Class A forcibly guided
- Contact guidance standard: EN 61810-3
- Nominal coil voltage: 24 V DC
- Must-operate voltage: 16.8 V DC
- Must-release voltage: 2.4 V DC
- Rated coil current: 38.2 mA
- Rated coil power: 0.9 W
- Coil resistance: Approximately 628.3 Ω
- Rated contact current: 6 A
- Nominal switching voltage: 250 V AC
- Rated switching capacity: 1,500 VA
- Contact material: Silver-nickel (AgNi) with gold (Au) plating
- Operate time: 7 ms
- Release time: 11 ms
- Mechanical endurance: 10,000,000 operations
- Electrical endurance: 100,000 operations under specified test conditions
- Rated insulation voltage: 250 V
- Pollution degree: 2
- Terminal type: Screw terminals
- Coil status indication: Integrated LED
- Mounting method: DIN rail
- DIN rail size: 35 mm
- Housing dimensions: 22.5 × 86.2 × 100.3 mm
- Ingress protection: IP20
- Operating temperature: −40 to +70 °C
- RoHS compliance: Yes
- Country of origin: Italy
- EAN / GTIN: 8012823420271
- Farnell UK order code: 4068527
The defining feature of the Finder 7S.32.9.024.5110 is its use of Class A forcibly guided contacts. This technology mechanically links the normally open and normally closed contacts so that they cannot simultaneously assume their closed positions under specified contact fault conditions.
In a conventional relay, a welded contact may not always be detectable through the state of another contact. Forcibly guided contact technology provides a mechanical relationship between the contacts that supports the detection of certain failures.
For example, if the normally open contact becomes welded closed, the mechanically linked normally closed contact is prevented from returning to its normal closed position. An appropriately designed safety monitoring circuit can detect this discrepancy and respond according to the requirements of the safety function.
The Finder 7S.32.9.024.5110 provides one normally open contact for a controlled switching function and one normally closed contact that may be incorporated into a feedback or monitoring circuit.
Its contact arrangement makes the module particularly useful in machinery control systems where relay switching must be monitored and where reliable fault detection forms part of the overall safety design.
Important: The Finder 7S.32.9.024.5110 is a relay module with forcibly guided contacts, not a complete safety controller. It must be integrated into an appropriately designed and validated safety-related control system.
24 V DC Coil Operation for Industrial Automation
The Finder 7S.32.9.024.5110 operates from a 24 V DC nominal coil supply, making it suitable for a wide variety of industrial automation and machinery control systems.
The relay has a specified must-operate voltage of 16.8 V DC and a must-release voltage of 2.4 V DC. These are defined switching thresholds rather than the full permissible continuous operating voltage range.
At nominal voltage, the coil draws approximately 38.2 mA, with a rated power consumption of 0.9 W and an approximate coil resistance of 628.3 Ω.
These characteristics should be considered when selecting a suitable DC power supply, PLC output or other control device. The supply must meet the relay's electrical requirements and account for voltage tolerances and switching conditions.
The relay offers a specified 7 ms operate time and 11 ms release time, providing predictable relay switching behaviour for industrial control applications.
These timing figures describe the relay itself and must not be treated as the total response time or stopping time of a complete machinery safety system.
The Finder 7S.32.9.024.5110 features two mechanically linked contacts arranged as one normally open and one normally closed.
The normally open contact can be used to switch an appropriately rated electrical load, while the normally closed contact can provide feedback to a suitable monitoring circuit. This arrangement is useful where a controlled switching function must be accompanied by contact status monitoring.
The relay has a 6 A rated contact current and a 250 V AC nominal switching voltage, with a rated switching capacity of 1,500 VA under specified conditions.
Its silver-nickel contacts with gold plating are designed to provide dependable electrical contact performance.
The permissible switching load depends on the application, particularly where inductive loads, high inrush currents or frequent switching are involved. The manufacturer's load-specific ratings should always be checked before installation.
Screw Terminal Connections for Industrial Control Panels
A key feature of the Finder 7S.32.9.024.5110 is its use of conventional screw terminals.
This distinguishes the Finder 7S.32 from the closely related 7S.12 family, which uses screwless terminals. The 7S.32 version is particularly suitable for electrical installations where screw terminal connections are preferred or specified.
Screw terminals provide a familiar wiring method for industrial control cabinets and electrical panels. Conductors should be prepared and tightened in accordance with the manufacturer's instructions, including the applicable conductor sizes and tightening torque.
The relay is designed for mounting on a standard 35 mm DIN rail and has a compact housing measuring 22.5 mm wide, 86.2 mm high and 100.3 mm deep.
An integrated LED coil status indicator provides visual confirmation when the relay coil is energised, helping technicians during commissioning, inspection and fault diagnosis.
The LED indicates coil energisation and does not independently verify the physical condition of every relay contact.
Industrial Durability and Long-Term Reliability
The Finder 7S.32.9.024.5110 is designed for industrial environments where reliable electrical switching and mechanical durability are important.
The relay has a specified mechanical endurance of 10 million operations and an electrical endurance of 100,000 operations under defined test conditions.
Actual service life depends on factors including contact loading, switching frequency, environmental conditions and installation practices.
With an ambient operating temperature range of −40 to +70 °C, the relay can be used in a wide variety of industrial electrical environments.
The module has an IP20 protection rating and should be installed within a suitable electrical enclosure that provides the protection required by the application.
Functional Safety and Machinery Control Considerations
Finder Series 7S relays are designed for safety-related applications requiring forcibly guided contacts. Their mechanically linked contact construction supports diagnostic monitoring within correctly designed electrical control systems.
The Series 7S range is associated with functional safety applications up to SIL 2 according to IEC 61508 and PL d according to EN ISO 13849-1, subject to the relevant product documentation and complete system design.
The safety performance of an installation depends on the overall circuit architecture, diagnostic coverage, reliability calculations and the response to detected faults.
The Finder 7S.32.9.024.5110 may be incorporated into emergency-stop circuits, machine guard interlocks and other monitored control functions where its electrical and safety characteristics meet the system requirements.
Important: The relay alone does not establish a particular Safety Integrity Level, Performance Level or safety category for the complete installation. The safety function must be designed, assessed and validated by a competent professional.
Typical Applications
- Industrial machinery safety-related control circuits.
- Machine guard monitoring and interlock systems.
- Emergency-stop switching circuits within validated safety architectures.
- Safety relay feedback and contact monitoring circuits.
- Industrial automation and PLC control panels.
- Monitored relay switching applications.
- Manufacturing and production machinery.
- Packaging and processing equipment.
- Conveyor and material handling systems.
- Industrial process control installations.
- 24 V DC industrial control systems.
- Electrical panels requiring screw terminal relay connections.
- DIN rail-mounted safety-related control assemblies.
- Applications requiring 1 NO + 1 NC forcibly guided contacts.
