Why Choose the Finder 55.34.9.110.0000T Railway Relay?
The Finder 55.34.9.110.0000T is a 7 A four-pole industrial electromechanical relay designed for railway equipment, transportation systems and demanding electrical control applications. Part of the Finder 55 Series railway relay range, this plug-in relay features a 110 V DC operating coil, four changeover contacts and a compact construction suitable for integration into electrical control assemblies.
The Finder 55.34T relay family is developed for railway applications requiring resistance to vibration, shock and challenging environmental conditions. The range is designed with reference to EN 50155 for railway electronic equipment, EN 61373 for shock and vibration resistance, and EN 45545-2 for railway fire protection requirements.
With its 4 CO / 4PDT contact arrangement, 7 A rated switching current, 250 V AC rated contact voltage and standard silver-nickel (AgNi) contacts, the Finder 55.34.9.110.0000T provides versatile switching for auxiliary railway equipment and industrial control systems. Its plug-in mounting arrangement supports installation using compatible Finder 94 Series relay sockets.
Key Advantages
- Railway-oriented relay construction for transportation and industrial control equipment.
- 110 V DC nominal coil voltage for compatible DC control systems.
- Four changeover contacts (4 CO / 4PDT) provide flexible multi-circuit switching.
- 7 A rated contact current for appropriately rated electrical loads.
- 15 A maximum peak contact current under specified conditions.
- Silver-nickel (AgNi) contacts provide dependable general-purpose switching.
- 1,750 VA AC1 switching capacity for suitable resistive loads.
- Plug-in relay construction supports convenient maintenance and replacement.
- Finder 94 Series socket compatibility simplifies integration into electrical panels.
- Railway shock and vibration resistance supports demanding mobile installations.
- 1 W nominal DC coil power supports efficient electromagnetic operation.
- Cadmium-free standard contacts support modern industrial component requirements.
Key Features
- Finder 55 Series railway relay.
- 55.34T four-pole relay type.
- 110 V DC nominal coil voltage.
- 12.5 kΩ nominal coil resistance.
- 8.8 mA nominal coil current.
- Approximately 1 W nominal coil consumption.
- Four changeover contacts (4 CO).
- Four-pole double-throw (4PDT) contact configuration.
- 7 A rated contact current.
- 15 A maximum peak contact current.
- 250 V AC rated contact voltage.
- 1,750 VA rated AC1 resistive switching capacity.
- 350 VA AC15 switching capacity at 230 V AC.
- Silver-nickel (AgNi) contact material.
- Monostable electromagnetic operation.
- Plug-in mounting using compatible Finder 94 Series sockets.
- Railway-specific environmental and vibration design.
- RT I environmental protection classification.
Specification note: The published Finder 55.34T railway relay documentation establishes the railway-family ratings and applicable design standards. Some general-purpose 55.34 listings quote different ambient temperature or coil operating figures. For safety-critical railway equipment, confirm the exact 55.34.9.110.0000T ordering code, coil operating range and applicable certification documents against the current Finder datasheet.
Designed for Railway Electrical and Control Systems
The Finder 55.34.9.110.0000T belongs to a relay range developed for railway equipment, where components may be exposed to vibration, mechanical shock, temperature changes and prolonged operating periods. The Finder 55.34T family is designed to address railway requirements covering material fire performance, vibration resistance and environmental operation.
The relay uses a 110 V DC electromagnetic coil to operate four mechanically linked changeover contact sets. When the coil is energised, each contact transfers from its normally closed position to its normally open position. Removing the coil voltage allows the relay to return to its normal state.
The four-pole changeover configuration is useful where a single control signal must operate several electrical circuits, such as lighting controls, auxiliary equipment, signalling interfaces and control interlocks. The relay is a general-purpose switching component and should not be treated as a forcibly guided safety relay unless a specific safety-related contact classification is independently established.
Plug-In Mounting and Maintenance Advantages
The Finder 55.34.9.110.0000T is designed for use with compatible Finder 94 Series relay sockets. Plug-in mounting allows a relay to be replaced without removing the permanent socket wiring, supporting maintenance and component replacement in railway control cabinets and industrial installations.
The relay's compact dimensions help conserve space in electrical assemblies, while its AgNi contacts and 7 A switching capability make it suitable for a variety of appropriately rated auxiliary control loads. Socket selection, contact protection and load derating must be considered during system design.
Typical Applications
- Railway auxiliary electrical control systems.
- Train interior and exterior lighting controls.
- Railway air conditioning and ventilation equipment.
- Passenger information and message display interfaces.
- Railway door control auxiliary circuits.
- Transportation electrical distribution panels.
- Rolling stock control and monitoring equipment.
- Industrial automation and machinery control.
- Electrical signalling and alarm circuits.
- Auxiliary switching and interlocking systems.
- OEM transportation electrical equipment.
- Multi-circuit switching using a 110 V DC control supply.
