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56.34.9.125.0040 Finder Miniature power relay 4 pole 12A DC 125V
Finder 56.34.9.125.0040 industrial power relay with a 125 V DC coil, four changeover contacts, 12 A rated contact current, silver-nickel contacts, lockable test button, mechanical indicator and plug-in mounting for industrial automation and electrical control applications.
£19.96
Why Choose the Finder 56.34.9.125.0040 Industrial Power Relay?
The Finder 56.34.9.125.0040 is a versatile 12 A industrial electromechanical power relay featuring a 125 V DC operating coil, four changeover contacts and a convenient plug-in mounting arrangement. Part of the Finder 56 Series, this relay is designed for industrial automation, machinery control, electrical panels and applications requiring dependable multi-circuit switching.
Its 4 CO / 4PDT contact configuration allows four separate changeover circuits to be operated from a single electromagnetic coil. The relay features silver-nickel (AgNi) contacts, a 12 A rated contact current and a 250 V AC rated contact voltage, making it suitable for a wide range of appropriately rated industrial electrical loads.
A distinguishing feature of the Finder 56.34.9.125.0040 is its lockable test button and mechanical indicator. These features support commissioning, inspection and troubleshooting, while the relay's plug-in construction enables straightforward installation and replacement using compatible Finder 96 Series sockets.
Key Advantages
- 125 V DC nominal coil for compatible industrial DC control supplies.
- Four changeover contacts (4 CO / 4PDT) for flexible multi-circuit switching.
- 12 A rated contact current for suitable industrial loads.
- Silver-nickel (AgNi) contacts provide dependable general-purpose switching.
- 20 A maximum peak contact current under specified conditions.
- 250 V AC rated contact voltage supports common electrical control applications.
- Lockable test button assists with manual functional checks.
- Mechanical indicator provides visual confirmation of relay operation.
- Plug-in mounting simplifies maintenance and relay replacement.
- Finder 96 Series socket compatibility supports efficient control panel integration.
- 14.2 kΩ nominal coil resistance and approximately 1.1 W DC coil consumption.
- −40 to +70 °C operating temperature range for demanding industrial environments.
Key Features
- Finder 56 Series miniature power relay.
- 56.34 four-pole relay type.
- 125 V DC nominal coil voltage.
- 100 V DC specified must-operate voltage.
- 14.2 kΩ nominal coil resistance.
- 8.8 mA nominal coil current.
- Approximately 1.1 W nominal coil power.
- Four changeover contacts (4 CO).
- Four-pole double-throw (4PDT) configuration.
- 12 A rated contact current.
- 20 A maximum peak contact current.
- 250 V AC rated contact voltage.
- 400 V AC maximum switching voltage.
- Silver-nickel (AgNi) contact material.
- Lockable test button.
- Mechanical operating indicator.
- Plug-in quick-connect terminals.
- Monostable electromagnetic operation.
- RT I environmental protection classification.
- Compatible with selected Finder 96 Series sockets.
Technical note: The principal specifications for this exact part number, including the 125 V DC coil, 14.2 kΩ coil resistance, 8.8 mA coil current, 4PDT contact arrangement, 12 A rating, AgNi contacts, test button and mechanical indicator, are confirmed by published distributor data. For final equipment design, verify load-specific switching capacities, socket compatibility and the permitted continuous coil voltage against the latest Finder datasheet.
Flexible Four-Pole Changeover Switching
The Finder 56.34.9.125.0040 incorporates four changeover contact sets operated by a single 125 V DC electromagnetic coil. Each pole provides a common terminal, a normally open contact and a normally closed contact.
When the coil is energised, all four contact sets transfer to their operated positions. Removing the coil voltage allows the relay to return to its normal state. This makes the relay suitable for control systems requiring several switching or signalling functions from one electrical input.
The silver-nickel contacts support general-purpose industrial switching. The relay's 12 A rated contact current applies under specified conditions; inductive, capacitive and motor loads may require derating or additional contact protection.
Lockable Test Button and Mechanical Indicator
The Finder 56.34.9.125.0040 is supplied with a test button and mechanical operating indicator, providing useful functionality for electrical commissioning and maintenance.
The test button allows the contacts to be actuated manually. The Finder test-button mechanism can also be locked in the operated position when configured according to the manufacturer's instructions. This feature should only be used where manual operation of the connected circuits is safe.
The mechanical indicator provides visible feedback of the relay's switching state without requiring external measuring equipment. It can help technicians identify whether the relay mechanism is in its normal or operated position during inspection.
Plug-In Mounting and Socket Compatibility
The Finder 56.34.9.125.0040 is a socketable power relay with plug-in quick-connect terminals. It is designed for installation using compatible Finder 96 Series sockets, which provide a practical interface between the relay and the permanent wiring of an electrical control panel.
Plug-in mounting simplifies replacement because the relay can be removed without disconnecting individual field wires from the socket. This is particularly useful in industrial maintenance environments where equipment downtime needs to be minimised.
The relay should be installed only after verifying the selected socket's terminal arrangement, contact current rating, insulation characteristics and compatibility with the 56.34 four-pole relay footprint.
Typical Applications
- Industrial automation and electrical control panels.
- Machinery auxiliary control circuits.
- Multi-circuit switching and control systems.
- Industrial process control equipment.
- Electrical interlocking and sequencing circuits.
- Control panels using 125 V DC control supplies.
- Industrial signalling and alarm systems.
- Motor control auxiliary circuits within the specified ratings.
- Heating, ventilation and building automation equipment.
- OEM machinery and electrical assemblies.
- Maintenance-friendly plug-in relay installations.
- Control systems requiring four changeover contacts and manual testing facilities.
Technical Specifications
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| Device Type | Power Relay | |
|---|---|---|
| Terminal Type | Faston / flat-pin | |
| Switching Current (A) | 12 A | |
| Load Voltage | 400 V AC | |
| Mounting Type | Plug-in socket | |
| Manufacturer | Finder | |
| Manufacturer part number | 56.34.9.125.0040 | |
| Series | 56 Series | |
| Relay type | 56.34 | |
| Product category | Industrial electromechanical power relay | |
| Nominal coil voltage | 125 V DC | |
| Coil voltage type | DC | |
| Nominal coil resistance | 14.2 kΩ | |
| Nominal coil current | 8.8 mA | |
| Nominal coil consumption | Approximately 1.1 W | |
| Must-operate voltage | 100 V DC | |
| Must-release voltage | 25 V DC | |
| Reported operating supply range | 100–138 V DC | |
| Contact configuration | 4 CO / 4PDT | |
| Number of poles | 4 | |
| Number of changeover contacts | 4 | |
| Contact material | Silver nickel (AgNi) | |
| Rated contact current | 12 A | |
| Maximum peak contact current | 20 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| AC1 resistive switching capacity | 3,000 VA at 250 V AC, based on the 56.34 family rating | |
| Maximum theoretical switching product | 4,800 VA at 400 V AC, subject to the applicable contact ratings and load conditions | |
| Nominal operate time | 11 ms | |
| Nominal release time | 11 ms | |
| Operating temperature | −40 to +70 °C | |
| Environmental protection | RT I | |
| Relay operating principle | Monostable electromagnetic | |
| Coil polarity | Non-polarised | |
| Mounting type | Plug-in / socket-mounted | |
| Terminal type | Plug-in, Faston 187 quick-connect | |
| Terminal width | Approximately 4.8 mm | |
| Compatible socket family | Finder 96 Series | |
| Manual test facility | Lockable test button | |
| Position indication | Mechanical indicator | |
| LED indication | Not specified as fitted on this variant | |
| Forcibly guided contacts | No | |
| Approximate dimensions | 27.7 × 40.8 × 37.6 mm | |
| EAN | 8012823326214 | |
| Application category | Industrial automation, electrical control and multi-circuit switching |
Frequently Asked Questions
What is the Finder 56.34.9.125.0040 used for?
The Finder 56.34.9.125.0040 is an industrial power relay used for electrical switching and control. Its four changeover contacts make it suitable for industrial automation, machinery control, signalling, interlocking and applications requiring multiple circuits to be operated from one control signal.
What coil voltage does the Finder 56.34.9.125.0040 require?
The relay uses a 125 V DC nominal coil. Its nominal coil resistance is 14.2 kΩ, with a nominal coil current of 8.8 mA and approximately 1.1 W power consumption. Published data lists a 100 V DC must-operate voltage and a 25 V DC must-release voltage.
How many contacts does the Finder 56.34.9.125.0040 have?
The relay has four changeover contacts (4 CO / 4PDT). Each pole includes common, normally open and normally closed connections, allowing four separate electrical circuits to be switched by a single electromagnetic coil.
What does the 0040 suffix mean on the Finder 56.34.9.125.0040?
The 0040 suffix identifies the silver-nickel (AgNi) contact version with a lockable test button and mechanical indicator. The test button supports manual contact operation during appropriate maintenance procedures, while the mechanical indicator shows the relay's operating state.
Which socket is compatible with the Finder 56.34.9.125.0040?
The Finder 56.34.9.125.0040 is designed for use with compatible Finder 96 Series relay sockets. It features a four-pole plug-in terminal arrangement with Faston-style quick-connect terminals. The socket must match the relay footprint and be rated for the intended electrical loads and installation conditions.
Designed for Industrial Automation and Electrical Engineering Applications
Finder 56 Series power relays provide dependable multi-pole switching for industrial control panels, machinery and automation equipment. The Finder 56.34.9.125.0040 combines a 125 V DC coil, four 12 A changeover contacts, silver-nickel contact material, a lockable test button and a mechanical indicator in a convenient plug-in relay design.
