Why Choose the Finder 7S.36.8.120.5420 Safety Relay?
The Finder 7S.36.8.120.5420 is a 120 V AC modular safety relay with six forcibly guided contacts, designed for safety-related switching, contact monitoring and industrial automation applications. Part of the Finder 7S Series, this relay features 4 normally open (NO) and 2 normally closed (NC) contacts, providing multiple switching paths and feedback contacts for appropriately engineered machinery safety circuits.
The relay incorporates forcibly guided contact technology, mechanically linking the normally open and normally closed contacts to support the detection of certain contact failures, including welded contacts. Its 6 A rated contact current, 250 V AC nominal contact switching voltage and silver tin oxide contacts with gold plating make it suitable for compatible industrial control and auxiliary switching applications.
Featuring a 120 V AC, 50/60 Hz coil, screw terminal connections, an illuminated coil status indicator and a compact 22.5 mm-wide DIN rail housing, the Finder 7S.36.8.120.5420 combines practical installation features with dependable industrial switching characteristics. It is suitable for machinery safety interfaces, electrical control cabinets and automation systems requiring several forcibly guided contacts within a single relay module.
Key Advantages
- Six forcibly guided contacts support monitored switching and contact failure detection in correctly designed safety circuits.
- 4 NO + 2 NC contact configuration provides four normally open switching contacts and two normally closed feedback contacts.
- 120 V AC coil supports compatible industrial AC control supplies.
- 50/60 Hz coil frequency accommodates common industrial AC supply frequencies.
- 6 A rated contact current for suitable control and auxiliary switching loads.
- 250 V AC nominal switching voltage supports compatible industrial control applications.
- Silver tin oxide contacts with gold plating provide suitable contact characteristics for industrial switching.
- Screw terminals enable straightforward wiring, inspection and maintenance.
- Illuminated coil indicator provides convenient visual confirmation of relay energisation.
- 22.5 mm slimline housing helps conserve space within electrical control panels.
- DIN rail mounting simplifies integration into industrial enclosures.
- −40 to +70 °C operating temperature range supports demanding industrial environments.
Key Features
- Finder 7S Series modular relay with forcibly guided contacts.
- Type 7S.36 six-contact relay module.
- 120 V AC nominal coil voltage.
- 50/60 Hz rated coil frequency.
- 4 NO + 2 NC contact arrangement.
- Six mechanically linked contacts for safety-related switching and monitoring.
- 6 A rated contact current.
- 250 V AC nominal switching voltage.
- Silver tin oxide (AgSnO₂) contacts with gold (Au) plating.
- Approximately 1.1 W coil power.
- 10.2 mA nominal coil current.
- 93 V AC must-operate voltage.
- 12 V AC must-release voltage.
- 12 ms operate time.
- 10 ms release time.
- Screw terminal connections.
- Integrated illuminated coil indicator.
- 22.5 mm housing width.
- DIN rail-mounted construction.
- IP20 protection rating.
Technical Specifications
- Manufacturer: Finder
- Series: 7S Series
- Type: 7S.36
- Manufacturer part number: 7S.36.8.120.5420
- Product type: Modular relay with forcibly guided contacts
- Nominal coil voltage: 120 V AC
- Coil frequency: 50/60 Hz
- Must-operate voltage: 93 V AC
- Must-release voltage: 12 V AC
- Nominal coil current: 10.2 mA
- Coil resistance: 11.8 kΩ
- Coil power: Approximately 1.1 W
- Number of contacts: 6
- Contact configuration: 4 NO + 2 NC
- Contact arrangement: 6PST, 4 Form A + 2 Form B
- Contact technology: Forcibly guided
- Rated contact current: 6 A
- Nominal contact switching voltage: 250 V AC
- Contact material: Silver tin oxide (AgSnO₂) with gold (Au) plating
- Operate time: 12 ms
- Release time: 10 ms
- Operating temperature: −40 to +70 °C
- Protection rating: IP20
- Terminal type: Screw terminals
- Status indication: Illuminated coil indicator
- Mounting type: DIN rail
- Housing width: 22.5 mm
- Contact guidance standard: EN 61810-3
Six-Contact Forcibly Guided Relay Technology for Machinery Safety and Industrial Automation
Industrial safety-related control systems often require multiple switching paths together with feedback contacts that can be monitored for potential failures. The Finder 7S.36.8.120.5420 provides four normally open and two normally closed forcibly guided contacts, allowing engineers to implement several switching functions and contact-state monitoring arrangements within a single relay module.
The mechanically linked contact arrangement supports the detection of certain faults when incorporated into appropriately designed monitoring circuits. Combined with its 120 V AC coil, 6 A contact rating, screw terminals and compact DIN rail housing, the relay is suitable for machinery safety interfaces, automation equipment and industrial control cabinets. The device is a safety-related relay component rather than a complete standalone safety controller; the achieved safety category, performance level or safety integrity level depends on the complete system design, diagnostic coverage and validation.
Typical Applications
- Industrial machinery safety-related control circuits.
- Emergency stop relay interfaces within validated safety systems.
- Machine guarding and safety interlock monitoring arrangements.
- Multiple-contact switching and feedback circuits.
- Industrial automation and control panels.
- Manufacturing and production machinery.
- Process control and auxiliary switching equipment.
- Electrical control cabinets using compatible 120 V AC supplies.
