Why Choose the Finder 56.34.9.024.0000T Railway Power Relay?
The Finder 56.34.9.024.0000T is a 12 A, four-pole miniature power relay from Finder's specialist 56.34T railway relay range. Designed for electrical switching in industrial and railway applications, it combines a 24 V DC operating coil, four changeover contacts (4 CO / 4PDT) and a robust plug-in construction suitable for demanding control environments.
Each of the relay's four silver nickel (AgNi) changeover contacts is rated at 12 A at 250 V AC for compatible resistive loads. The contact system also offers a 20 A maximum peak current rating and a 400 V AC maximum switching voltage, subject to the applicable load and installation limits. Its 490 Ω nominal coil resistance and approximately 49 mA nominal coil current make it suitable for compatible 24 V DC control circuits.
The distinguishing T suffix identifies the railway-oriented version of the Finder 56.34 relay. The 56.34T range is associated with railway equipment requirements, including resistance to vibration, shock and environmental stresses. Published product information references EN 50155 and EN 61373, making this variant particularly relevant to onboard electrical control systems. Its plug-in terminals also allow straightforward installation and replacement using an appropriately selected compatible socket.
Key Advantages
- Railway-oriented 56.34T design for specialist transport and industrial electrical equipment.
- Four changeover contacts (4PDT) enable simultaneous switching of four independent circuits.
- 12 A rated contact current supports substantial electrical loads under specified conditions.
- 24 V DC operating coil integrates with compatible low-voltage control systems.
- Silver nickel (AgNi) contacts provide established general-purpose switching performance.
- 20 A maximum peak contact current for short-duration current demands within specified limits.
- 250 V AC rated contact voltage for industrial and transport electrical circuits.
- 400 V AC maximum switching voltage, subject to the manufacturer's switching limits.
- Railway vibration and shock suitability associated with the EN 61373 standard.
- Plug-in construction simplifies servicing and replacement.
- Non-polarised coil operation simplifies conventional DC coil wiring.
- Compact four-pole format helps conserve space in equipment enclosures.
Key Features
- Finder 56 Series miniature industrial power relay.
- Specialist 56.34T railway relay configuration.
- 24 V DC nominal coil voltage.
- 4 CO / 4PDT / 4 Form C contact configuration.
- 12 A rated contact current.
- 20 A maximum peak contact current.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- 12 A at 30 V DC resistive-load contact rating.
- AgNi silver nickel contact material.
- 490 Ω nominal coil resistance.
- 49 mA nominal coil current.
- 19.2 V DC standard must-operate voltage.
- 4.8 V DC standard must-release voltage.
- 11 ms standard operate time.
- 11 ms standard release time.
- Non-latching electromechanical operation.
- Plug-in quick-connect terminals measuring approximately 4.8 × 0.5 mm.
- −40 to +70 °C listed operating temperature range.
- Suitable for appropriately specified railway and industrial control assemblies.
Specification note: The core electrical ratings are listed for the exact 56.34.9.024.0000T part number. The standard operate/release values and selected dimensional data are also supported by the Finder 56.34 platform. Railway approval scope, environmental classification and installation requirements should be checked against the current manufacturer documentation for the intended application.
Designed for Railway Electrical Control Applications
The Finder 56.34.9.024.0000T belongs to the specialist 56.34T railway relay range, which is intended for electrical equipment exposed to the environmental and mechanical demands of transport applications. Railway control assemblies may experience vibration, shock, changes in ambient temperature and variations in the control supply. The T-series designation distinguishes this relay from the conventional industrial 56.34 version.
Published information for Finder's railway-oriented 46 and 56 Series relays references EN 50155 for railway electronic equipment and EN 61373 for vibration and shock testing. These standards are relevant when selecting components for onboard auxiliary electrical systems. However, the applicable certification scope and equipment-level compliance must be established using the current manufacturer documentation and the requirements of the railway project.
The relay's four-pole changeover configuration is useful for coordinated auxiliary switching. A single 24 V DC control signal can operate four contact sets, allowing functions such as equipment enable, status feedback, auxiliary interlocking and signalling to be managed through one electromechanical device. Each contact must remain within its applicable electrical ratings, and the contacts should not be treated as safety-rated forcibly guided contacts.
How the Finder 56.34.9.024.0000T Works
The relay contains an electromagnetic coil and four mechanically linked changeover contact sets. Applying the specified 24 V DC control voltage energises the coil, causing the normally open contacts to close and the normally closed contacts to open. When the coil supply is removed, the return mechanism restores the contacts to their original positions.
Its silver nickel contacts are suitable for a variety of general-purpose industrial switching applications. The 12 A rated contact current applies to defined operating conditions and must not be assumed for every inductive or capacitive load. Motor circuits, solenoids, LED drivers and switched-mode power supplies may produce substantial starting or inrush currents that require additional derating or protective components.
The relay uses quick-connect plug-in terminals and can be fitted into an appropriately selected compatible socket. Socket-based installation makes replacement and servicing more convenient, especially in equipment where downtime and maintenance access are important. Socket retention, terminal compatibility, vibration resistance and wiring practices should all be assessed for railway installations.
Typical Applications
- Railway onboard auxiliary electrical systems.
- Train lighting and auxiliary control circuits.
- Railway heating, ventilation and air conditioning equipment.
- Passenger information and indication systems.
- Railway signalling and equipment status circuits, where appropriately specified.
- Transport electrical control cabinets.
- Industrial automation and machinery control.
- 24 V DC control systems requiring four-pole switching.
- Electrical interlocking and auxiliary switching.
- Industrial monitoring and alarm equipment.
- OEM electrical equipment manufacturing.
- Maintenance and replacement of compatible Finder 56.34T relays.
