Finder 50.14.9.024.4220 – 50 Series Relays with forcibly guided contacts

Why Choose the Finder 50.14.9.024.4220 Forcibly Guided Safety Relay?

The Finder 50.14.9.024.4220 is a compact and reliable 8 A, four-pole safety relay with a 24 V DC coil, designed for safety-related switching and monitoring circuits in industrial automation and machinery control systems. As part of the Finder Series 50 forcibly guided contact relay range, it incorporates mechanically linked contacts that support contact-state monitoring in appropriately designed safety circuits.

Featuring two normally open (NO) and two normally closed (NC) contacts, the Finder 50.14.9.024.4220 uses forcibly guided contact technology conforming to EN 61810-3 Type A. This arrangement prevents normally open and normally closed contacts from being closed simultaneously, including under specified contact fault conditions, supporting fault detection through external monitoring circuitry.

With an 8 A rated contact current, 24 V DC operating coil and through-hole PCB mounting, this relay is well suited to safety interface boards, industrial control equipment and machinery safety systems. Its RT III wash-tight construction, silver tin oxide contacts and compact dimensions make it suitable for integration into electronic safety control assemblies.

Key Advantages

• Reliable four-pole safety relay with forcibly guided contacts for industrial control applications.
• 2 NO + 2 NC contact configuration supports safety monitoring and controlled switching.
• 8 A rated contact current for compatible electrical loads.
• 24 V DC coil suitable for industrial low-voltage control systems.
• EN 61810-3 Type A forcibly guided contacts support contact fault detection.
• 6 kV impulse isolation between coil and contacts.
• Silver tin oxide (AgSnO₂) contacts provide dependable switching performance.
• RT III wash-tight construction supports suitable PCB manufacturing processes.
• Compact through-hole PCB mounting simplifies integration into electronic control equipment.
• Cadmium-free contact materials support environmentally responsible equipment design.

Key Features

• Finder Series 50 forcibly guided contact relay.
• 50.14 four-pole relay configuration.
• 8 A rated contact current.
• 15 A maximum peak contact current.
• 24 V DC nominal coil voltage.
• 2 normally open + 2 normally closed contacts.
• 250 V AC nominal contact voltage.
• 400 V AC maximum switching voltage.
• 0.8 W nominal coil consumption.
• 720 Ω nominal coil resistance.
• 33.3 mA nominal coil current.
• AgSnO₂ contact material.
• EN 61810-3 Type A mechanically linked contact system.
• 8 mm clearance and creepage distance between coil and contacts.
• 6 kV impulse withstand voltage between coil and contacts.
• RT III wash-tight protection category.
• Monostable, non-latching operation.
• Through-hole PCB mounting.

Reliable Forcibly Guided Contact Switching for Industrial Safety Systems

The Finder 50.14.9.024.4220 uses a mechanically linked contact mechanism to provide coordinated switching between its two normally open and two normally closed contacts. When the 24 V DC coil is energised, the normally open contacts close while the normally closed contacts open. When the coil supply is removed, the contacts return to their normal positions.

Unlike conventional electromechanical relays, forcibly guided contact relays are constructed so that normally open and normally closed contacts cannot occupy their closed positions simultaneously under the fault conditions defined by the applicable standard. This characteristic enables external safety monitoring circuits to detect certain contact failures, including welded contacts. The Finder Series 50 is therefore suitable for integration into appropriately engineered machinery safety systems, emergency-stop monitoring interfaces and safety-related control assemblies. The relay itself is a component and must be incorporated into a correctly designed and validated safety circuit to achieve the required safety performance.

Typical Applications

• Industrial machinery safety control circuits.
• Emergency-stop monitoring and interface equipment.
• Safety-related PLC interface boards.
• Machine guarding and interlock monitoring systems.
• Industrial automation safety control assemblies.
• Safety relay modules and electronic safety interfaces.
• Contact monitoring and fault detection circuits.
• OEM machinery and safety control equipment.
• Industrial equipment requiring forcibly guided contact switching.
• PCB-mounted safety switching and monitoring systems.