Why Choose the Finder 7S.34.8.230.4220 Safety Relay?
The Finder 7S.34.8.230.4220 is a reliable electromechanical safety relay with forcibly guided contacts, designed for industrial machinery safety circuits, monitored switching applications and automation control systems. Part of the Finder 7S Series, this modular relay combines dependable electromechanical operation with a compact DIN rail-mounted design.
Featuring four forcibly guided contacts arranged as 2 normally open (NO) and 2 normally closed (NC), the relay provides switching and feedback functionality for appropriately designed safety-related control systems. Its mechanically linked contact arrangement allows suitable external monitoring circuits to detect faults such as welded contacts, supporting diagnostic functions in machinery safety applications.
With a 230 V AC operating coil, 6 A rated contact current and 250 V AC nominal switching voltage, the Finder 7S.34.8.230.4220 is suitable for industrial control panels and safety interface assemblies. Its screw terminal connections, integrated LED indicator and compact 22.5 mm wide housing support straightforward installation, operation and maintenance.
Key Advantages
- Class A forcibly guided contacts support fault detection in externally monitored safety circuits.
- 2 NO + 2 NC contact configuration provides balanced switching and feedback functionality.
- 230 V AC operating coil suitable for industrial AC control supplies.
- 6 A rated contact current for appropriately rated electrical loads.
- 250 V AC nominal switching voltage supports industrial control applications.
- 1,500 VA switching capacity for resistive AC loads.
- Integrated LED indicator enables convenient visual monitoring of coil energisation.
- Screw terminal connections provide secure and accessible wiring.
- 22.5 mm wide modular housing helps conserve control cabinet space.
- DIN rail mounting simplifies integration into industrial electrical enclosures.
- −40 to +70 °C operating temperature range supports demanding environments.
- 10 million mechanical operations provide long-term switching durability.
Key Features
- Finder 7S Series modular safety relay.
- Four forcibly guided electromechanical contacts.
- 2 normally open and 2 normally closed contacts.
- Class A contact guidance in accordance with EN 61810-3.
- 230 V AC nominal coil voltage.
- 50/60 Hz AC operating supply.
- 195–264 V AC control supply operating range.
- 6 A rated contact current.
- 15 A maximum peak contact current.
- 250 V AC nominal switching voltage.
- 1,500 VA rated AC-1 switching capacity.
- 1.2 W coil power consumption.
- 11.8 mA nominal coil current.
- 19.5 kΩ coil resistance.
- Silver tin oxide (AgSnO) contact material.
- 12 ms typical operate time.
- 10 ms typical release time.
- Integrated LED status indicator.
- Screw terminal electrical connections.
- 35 mm DIN rail mounting.
- IP20 protection rating.
Technical Specifications
- Manufacturer: Finder
- Series: 7S Series
- Model: 7S.34.8.230.4220
- Product type: Electromechanical safety relay
- Contact technology: Forcibly guided contacts
- Contact guidance classification: Class A
- Contact configuration: 2 NO + 2 NC
- Number of contacts: 4
- Contact form: 4PST, 2 Form A + 2 Form B
- Nominal coil voltage: 230 V AC
- Coil supply type: AC
- Coil frequency: 50/60 Hz
- Control supply operating range: 195–264 V AC
- Must-operate voltage: 195 V AC
- Must-release voltage: 23 V AC
- Nominal coil current: 11.8 mA
- Coil power consumption: 1.2 W
- Coil resistance: 19.5 kΩ
- Rated contact current: 6 A
- Maximum peak contact current: 15 A
- Nominal switching voltage: 250 V AC
- Rated insulation voltage: 250 V
- Rated AC-1 switching capacity: 1,500 VA
- Contact material: Silver tin oxide (AgSnO)
- Operate time: 12 ms
- Release time: 10 ms
- Mechanical endurance: 10,000,000 operations
- Electrical endurance: 100,000 operations
- Operating temperature: −40 to +70 °C
- Protection rating: IP20
- Pollution degree: 2
- Mounting type: 35 mm DIN rail
- Terminal type: Screw terminals
- Status indication: Integrated LED indicator
- Housing width: 22.5 mm
- Dimensions (W × H × D): 22.5 × 100.3 × 86.2 mm
- Contact terminal arrangement: 11–12, 21–22, 33–34, 43–44
- Coil terminals: A1 / A2
- Applicable contact standard: EN 61810-3
- Country of origin: Italy
- RoHS compliance: Compliant
- EAN: 8012823420714
Reliable Safety Switching for Industrial Machinery
Safety relays with forcibly guided contacts are important components in industrial safety-related control systems. Their mechanically linked normally open and normally closed contacts are designed to prevent opposing contact types from simultaneously remaining closed under specified fault conditions. This construction enables suitable external monitoring circuits to detect failures such as welded contacts.
The Finder 7S.34.8.230.4220 features a 2 NO + 2 NC contact arrangement, making it suitable for applications requiring two normally open switching paths and two normally closed feedback contacts. This configuration supports monitored switching assemblies, contactor feedback circuits and machinery safety interfaces.
Its Class A forcibly guided contacts conform to EN 61810-3, providing a defined mechanical relationship between normally open and normally closed contacts. The relay can be integrated into safety-related control architectures designed to achieve specific safety performance requirements, subject to appropriate system engineering and verification.
The 230 V AC coil, 6 A contact rating and compact DIN rail construction make this model practical for industrial electrical cabinets. The integrated LED indicator provides visual confirmation of coil energisation, while screw terminals allow conventional panel wiring and maintenance.
The Finder 7S.34.8.230.4220 is a relay component rather than a standalone safety controller. The achievable safety integrity level, performance level and diagnostic coverage depend on the complete safety system architecture, monitoring equipment and application-specific risk assessment.
Typical Applications
- Industrial machinery safety-related control circuits.
- Emergency-stop switching arrangements with external safety monitoring.
- Machine guarding and safety interlock circuits.
- Safety relay interface assemblies and expansion circuits.
- Monitored contactor switching and feedback arrangements.
- Industrial automation and control panel installations.
- Railway industry control and monitoring applications.
- Manufacturing machinery and automated production lines.
- Packaging equipment and material handling machinery.
- Conveyor systems and automated warehouse equipment.
- Industrial lifting equipment and machinery interfaces.
- OEM machine building and electrical control cabinet applications.
