55.12.8.120.5000 Finder Miniature PCB relay 2pole 10A 120V

Why Choose the Finder 55.12.8.120.5000 Miniature General Purpose Relay?

The Finder 55.12.8.120.5000 is a compact 10 A miniature general purpose electromechanical relay designed for dependable electrical switching in industrial automation, electronic control equipment and electrical control systems. Part of the established Finder 55 Series, this relay features a 120 V AC coil, two changeover contacts and silver-nickel contacts with gold plating (AgNi + Au) for switching suitable electrical loads.

The double-pole double-throw (DPDT) contact configuration provides two independently wired changeover circuits operated by a common electromagnetic coil. This allows a single control signal to switch two separate circuits simultaneously, making the Finder 55.12.8.120.5000 suitable for control logic, equipment interfaces, auxiliary switching and signalling applications.

With a 10 A rated contact current, 250 V AC rated contact voltage and 2,500 VA rated AC1 switching capacity, the Finder 55.12.8.120.5000 combines practical industrial switching performance with compact PCB mounting. Its gold-plated contact surfaces, through-hole solder terminals and approximately 27.7 × 20.7 × 35.8 mm dimensions make it suitable for equipment manufacturers and electronic control system designers requiring reliable relay integration.

Key Advantages

• 10 A rated contact current for switching appropriately rated industrial electrical loads.
• 120 V AC nominal coil suitable for compatible AC control circuits.
• Two changeover contacts (2 CO / DPDT) provide flexible switching of two separate circuits.
• Gold-plated silver-nickel contacts support dependable contact performance in suitable switching applications.
• 250 V AC rated contact voltage for compatible electrical equipment.
• 2,500 VA rated AC1 switching capacity for resistive AC loads.
• 400 V AC maximum switching voltage within the specified relay ratings.
• PCB through-hole mounting enables direct integration into electronic control assemblies.
• Compact construction helps conserve space within industrial electrical equipment.
• −40 to +85 °C operating temperature range supports use across a broad range of equipment environments.
• Non-latching electromechanical operation provides straightforward control functionality.
• Suitable for industrial automation, control interfaces and OEM electrical equipment.

Key Features

• Finder 55 Series miniature general purpose relay.
• 55.12 relay type with two changeover contacts.
• DPDT / 2 CO contact configuration.
• 120 V AC nominal coil voltage.
• AC coil operation at 50/60 Hz.
• 10 A rated contact current.
• 250 V AC rated contact voltage.
• 400 V AC maximum switching voltage.
• 2,500 VA rated AC1 switching capacity.
• 500 VA rated AC15 switching capacity at 230 V AC.
• 4.7 kΩ nominal coil resistance.
• 12 mA nominal coil current.
• 96–132 V AC coil operating voltage range.
• Silver-nickel contacts with gold plating (AgNi + Au).
• PCB through-hole solder terminals.
• 200,000 electrical operations at rated AC1 load under specified test conditions.
• −40 to +85 °C operating temperature range.
• Compact housing measuring approximately 27.7 × 20.7 × 35.8 mm.

Reliable Electrical Switching for Industrial Automation

Electromechanical relays such as the Finder 55.12.8.120.5000 enable industrial control circuits to switch separate electrical loads using an electromagnetic operating mechanism. When the 120 V AC coil is energised, both changeover contacts transfer from their normally closed positions to their normally open positions. This enables a single control signal to operate two independent switching circuits, providing flexibility for auxiliary control, electrical interlocking and equipment signalling.

The Finder 55 Series is designed for industrial automation engineers, electrical equipment manufacturers and electronic control system designers requiring dependable switching and compact installation. The AgNi + Au contact material provides gold-plated contact surfaces for suitable signal and power switching applications, while PCB through-hole mounting allows direct integration into equipment assemblies. For inductive loads, motors and circuits with high inrush currents, the relay must be selected according to the applicable load-specific switching ratings rather than the AC1 resistive-load rating alone.

Typical Applications

• Industrial automation and electronic control assemblies.
• PCB-mounted auxiliary switching circuits.
• Industrial machinery control and signalling equipment.
• Electrical interlocking and control logic applications.
• Building automation and electrical control systems.
• Heating, ventilation and air conditioning controllers.
• Equipment monitoring and status indication circuits.
• Automated production and process control equipment.
• OEM electronic control boards and industrial equipment.
• Electrical switching and maintenance applications.