Why Choose the Finder 7S.32.9.012.5110 Safety Relay Module?
The Finder 7S.32.9.012.5110 is a 12 V DC safety relay module with Class A forcibly guided contacts, designed for industrial machinery, automation equipment and safety-related electrical control systems. Part of the Finder Series 7S, this compact DIN rail-mounted relay combines a 1 normally open (NO) + 1 normally closed (NC) contact arrangement with a 6 A contact rating and 250 V AC nominal switching voltage.
Its mechanically linked contacts are designed to support the detection of certain relay faults, including welded contacts, when integrated into a suitable monitoring circuit. The Class A forcibly guided contact arrangement complies with EN 61810-3, making the module a practical component for machinery safety and monitored industrial switching applications.
The Finder 7S.32.9.012.5110 features screw terminals, silver-nickel contacts with gold plating, an illuminated coil status indicator and a compact 22.5 mm-wide housing. Unlike the closely related Finder 7S.12 version, which uses screwless terminals, the 7S.32 version uses conventional screw terminals.
With a 12 V DC coil, approximately 0.7 W coil consumption, IP20 protection and an operating temperature range of −40 to +70 °C, this Finder relay provides dependable switching and feedback functionality for properly engineered industrial control systems.
Key Advantages
- Class A forcibly guided contacts: Support fault detection in appropriately designed safety-related control circuits.
- 1 NO + 1 NC contact configuration: Provides one normally open switching contact and one normally closed feedback contact.
- 12 V DC coil: Suitable for compatible low-voltage industrial control systems.
- 6 A rated contact current: Supports a range of appropriately rated industrial control loads.
- 250 V AC nominal switching voltage: Enables use in suitable AC switching circuits.
- Screw terminal connections: Provide a familiar wiring method for industrial electrical panels.
- Gold-plated silver-nickel contacts: Support reliable electrical contact performance.
- Integrated LED indication: Allows quick visual identification of coil energisation.
- Compact 22.5 mm housing: Helps conserve DIN rail space.
- 35 mm DIN rail mounting: Simplifies installation in standard electrical control cabinets.
- Defined switching times: Approximately 7 ms operate time and 11 ms release time.
- Wide operating temperature range: Suitable for industrial environments from −40 to +70 °C.
- Finder Series 7S technology: Designed for applications requiring mechanically linked relay contacts.
Key Features
- Finder Series 7S modular safety relay.
- Type 7S.32 with screw terminals.
- Class A forcibly guided contacts.
- 1 normally open and 1 normally closed contact.
- Single-channel relay architecture.
- 12 V DC nominal coil voltage.
- 6 A rated contact current.
- 250 V AC nominal switching voltage.
- Silver-nickel contacts with gold plating.
- Approximately 55 mA rated coil current.
- Approximately 0.7 W rated coil power.
- Approximately 218.2 Ω coil resistance.
- 9.6 V DC specified must-operate voltage.
- 1.2 V DC specified must-release voltage.
- 7 ms operate time.
- 11 ms release time.
- Illuminated coil status indicator.
- Conventional screw terminal connections.
- 35 mm DIN rail mounting.
- 22.5 mm nominal housing width.
- IP20 ingress protection rating.
- −40 to +70 °C operating temperature range.
- RoHS-compliant construction.
Technical Specifications
- Manufacturer: Finder
- Series: 7S
- Product code: 7S.32.9.012.5110
- Product type: Safety 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)
- Relay architecture: Single-channel
- Contact guidance: Class A forcibly guided
- Contact guidance standard: EN 61810-3
- Nominal coil voltage: 12 V DC
- Must-operate voltage: 9.6 V DC
- Must-release voltage: 1.2 V DC
- Rated coil current: 55 mA
- Rated coil power: 0.7 W
- Coil resistance: Approximately 218.2 Ω
- Rated contact current: 6 A
- Nominal switching voltage: 250 V AC
- Contact material: Silver-nickel (AgNi) with gold (Au) plating
- Operate time: 7 ms
- Release time: 11 ms
- Terminal type: Screw terminals
- Coil status indication: Illuminated indicator
- Mounting method: DIN rail
- DIN rail size: 35 mm
- Nominal housing width: 22.5 mm
- Ingress protection: IP20
- Operating temperature: −40 to +70 °C
- RoHS compliance: Yes
- Country of origin: Italy
- Farnell UK order code: 4068526
The defining characteristic of the Finder 7S.32.9.012.5110 is its Class A forcibly guided contact construction. This technology mechanically links the normally open and normally closed contacts so that they cannot simultaneously assume their closed positions under specified fault conditions.
In an ordinary relay, contact faults may not always be detectable through the position of another contact. With forcibly guided contacts, the mechanical relationship between the contact sets supports monitoring 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 required safety function.
The Finder 7S.32.9.012.5110 provides one normally open contact for a suitable switching function and one normally closed contact that may be incorporated into a feedback or monitoring circuit.
This contact arrangement makes the relay useful in machinery safety systems, monitored control circuits and industrial automation applications where the switching device's behaviour must be supervised.
Important: The Finder 7S.32.9.012.5110 is a relay module with forcibly guided contacts, not a complete safety controller. It must be incorporated into an appropriately designed and validated system to achieve the required functional safety performance.
12 V DC Coil Operation for Industrial Control Systems
The Finder 7S.32.9.012.5110 operates from a 12 V DC nominal coil supply, making it suitable for industrial and machinery control systems using this low-voltage DC supply.
Its specified must-operate voltage is 9.6 V DC, while the must-release voltage is 1.2 V DC. These values describe specified relay operating thresholds and should not be interpreted as a complete continuous operating voltage range.
At nominal voltage, the coil draws approximately 55 mA, with a rated coil power consumption of approximately 0.7 W and resistance of approximately 218.2 Ω.
The relay has a specified 7 ms operate time and 11 ms release time. These characteristics are useful when designing control circuits, although they do not represent the complete response or stopping time of a machinery safety system.
The Finder 7S.32.9.012.5110 provides 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 load, while the normally closed contact may be used to provide feedback to a monitoring circuit. The exact function of each contact depends on the safety architecture and the electrical system design.
The relay has a 6 A rated contact current and a 250 V AC nominal switching voltage. Contact ratings must be considered alongside the load type, switching frequency and expected electrical endurance.
The silver-nickel contacts with gold plating are designed to provide reliable electrical contact performance in industrial relay applications.
For inductive loads, frequent switching or circuits with high inrush currents, the manufacturer's relevant contact load ratings should be consulted before selecting the relay.
Screw Terminals for Secure Industrial Panel Wiring
A key feature of the Finder 7S.32.9.012.5110 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 therefore particularly suitable for installations where screw terminal connections are preferred or specified.
Screw terminals provide a familiar method of connecting conductors within industrial control cabinets. Conductors must be prepared and tightened in accordance with the manufacturer's installation instructions, including the applicable conductor sizes and tightening torque.
The module is designed for installation on a standard 35 mm DIN rail and has a compact 22.5 mm nominal width, making it suitable for control panels where space is limited.
An illuminated indicator provides visual confirmation of coil energisation, supporting commissioning and troubleshooting. The indicator does not independently verify the physical condition of every relay contact.
Functional Safety and Machinery Control Considerations
Finder Series 7S relays are designed for safety-related applications requiring forcibly guided contacts. The Series 7S manufacturer documentation identifies applications up to SIL 2 according to IEC 61508, subject to the complete system design and the applicable requirements.
The Finder 7S.32.9.012.5110 uses a single-channel relay architecture. This must be considered when designing safety functions requiring fault tolerance, redundancy or particular diagnostic coverage.
For machinery safety applications, the required Performance Level or Safety Integrity Level depends on the entire system, including sensors, controllers, switching devices, monitoring arrangements and the response to detected faults.
The relay may be incorporated into emergency-stop circuits, guard interlock systems and other monitored control applications where the overall design is appropriate.
Important: The relay alone does not establish a specific SIL, Performance Level or safety category for the complete installation. Safety-related circuits must be 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.
- 12 V DC 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.
