Finder 46.61.9.072.4000T – 46 Series Miniature Industrial relays – Railway

Why Choose the Finder 46.61.9.072.4000T Miniature Industrial Relay?

The Finder 46.61.9.072.4000T is a compact, high-performance 16 A miniature industrial electromechanical relay designed for dependable electrical switching in railway equipment, industrial automation and control systems. Part of the established Finder 46 Series, this specialist relay combines a robust contact system with a compact, socket-compatible construction suitable for demanding electrical installations.

Featuring a 72 V DC operating coil and a single changeover contact (1 CO / SPDT), the Finder 46.61.9.072.4000T enables electrical loads to be controlled through a separate DC control circuit. Its silver tin oxide (AgSnO2) contacts provide reliable switching performance, while the changeover arrangement allows a circuit to be transferred between normally closed and normally open connections.

With a 16 A rated contact current, 250 V AC rated contact voltage and 440 V AC maximum switching voltage, this relay offers substantial switching capability in a compact housing. The T suffix identifies a specialist railway-oriented variant, making the product particularly relevant to applications using 72 V DC control supplies, subject to the electrical and environmental requirements of the installation.

Key Advantages

• Compact 16 A miniature industrial power relay for demanding control applications.
• 72 V DC nominal operating coil suitable for compatible railway and industrial DC control supplies.
• Single changeover contact (SPDT) provides flexible switching between two circuit paths.
• 250 V AC rated contact voltage for compatible electrical loads.
• 440 V AC maximum switching voltage for applications within the specified switching limits.
• Silver tin oxide (AgSnO2) contacts provide dependable switching performance.
• Specialist railway-oriented T variant for relevant transport and industrial equipment.
• Socket-compatible design supports convenient installation and replacement.
• Quick-connect terminals provide additional installation flexibility.
• Compact construction helps reduce installation space in control panels and equipment.
• Non-latching electromagnetic operation provides automatic contact return when the coil is de-energised.

Key Features

• Finder 46 Series miniature industrial relay.
• 46.61 single-pole changeover relay platform.
• 72 V DC nominal operating coil.
• 16 A rated contact current.
• 1 CO (SPDT / 1 Form C) contact configuration.
• 250 V AC rated contact voltage.
• 440 V AC maximum switching voltage.
• Silver tin oxide (AgSnO2) contact material.
• 10.4 kΩ nominal coil resistance.
• Approximately 6.9 mA nominal coil current.
• 52.6 V DC must-operate voltage.
• 14.4 V DC must-release voltage.
• 15 ms typical operate time.
• 5 ms typical release time.
• RT II flux-proof construction.
• Monostable, non-latching electromagnetic operation.
• Plug-in socket mounting with quick-connect terminals.
• Specialist T-version construction for railway-related applications.

Reliable 72 V DC Switching for Railway and Industrial Control

The Finder 46.61.9.072.4000T uses an electromagnetic mechanism to control a separate electrical circuit. When the 72 V DC coil is energised, the internal armature transfers the relay's changeover contact from its normally closed position to its normally open position. When the coil supply is removed, the contact returns automatically to its original state.

The single changeover contact configuration is useful for control logic, status switching, auxiliary circuits and signal routing. The relay provides common, normally open and normally closed terminals, enabling a control signal to select between two electrical paths. Its 16 A rated contact current allows switching of compatible loads where the appropriate load-specific ratings are observed.

The 46.61.9.072.4000T railway-oriented variant is particularly relevant to systems using 72 V DC auxiliary supplies. Its socket-compatible construction supports maintenance and replacement in control equipment. For railway or other safety-critical installations, suitability should be assessed against the complete application requirements, including applicable standards, vibration, shock, temperature, switching duty and system-level approvals.

Typical Applications

• Railway electrical control and auxiliary systems.
• Rolling-stock control equipment using 72 V DC supplies.
• Railway signalling and auxiliary interface circuits, where suitably approved.
• Industrial automation and machinery control systems.
• Electrical control panels and relay interface assemblies.
• DC-powered industrial control equipment.
• Auxiliary switching and signal routing circuits.
• Industrial status indication and control interfaces.
• Transport infrastructure electrical equipment.
• OEM control equipment manufacturing.
• Maintenance and replacement of compatible Finder 46 Series relays.