55.13.8.120.2000 Finder Miniature PCB relay 3 pole 10A 120V

Why Choose the Finder 55.13.8.120.2000 General Purpose Relay?

The Finder 55.13.8.120.2000 is a compact 120 V AC general purpose electromechanical relay from the established Finder 55 Series. Designed for industrial automation, electrical control circuits and electronic equipment, this relay combines a 10 A contact rating with three changeover contacts (3 CO / 3PDT), providing flexible switching options within a compact PCB-mounted design.

Featuring a 120 V AC coil suitable for 50/60 Hz operation, the Finder 55.13.8.120.2000 enables an AC control circuit to operate three electrically separate changeover contact sets simultaneously. Each changeover contact provides normally open and normally closed switching functions, making the relay suitable for applications requiring multiple switching operations from a single control signal.

The Finder 55.13.8.120.2000 is designed for printed circuit board (PCB) mounting and features silver cadmium oxide (AgCdO) contacts. Its compact dimensions make it suitable for industrial electronic assemblies, machinery control equipment and OEM electrical products. The relay offers a practical solution for designers requiring a three-pole changeover relay with a 120 V AC operating coil and 10 A switching capability.

Key Advantages

• Finder 55 Series general purpose relay for industrial and electronic switching applications.
• 120 V AC coil voltage suitable for compatible AC control circuits.
• Three changeover contacts (3 CO / 3PDT) provide flexible multi-circuit switching.
• 10 A rated contact current for appropriately specified electrical loads.
• 250 V AC rated contact voltage for suitable AC switching applications.
• 400 V AC maximum switching voltage, subject to manufacturer specifications.
• PCB mounting supports integration into electronic control assemblies.
• Silver cadmium oxide (AgCdO) contacts for the specified ordering variant.
• Three changeover contact sets can be operated using one relay coil.
• Compact construction helps conserve space within electronic equipment.
• Monostable operation returns the contacts to their normal positions when the coil is de-energised.
• Polarity-free AC coil connections simplify integration into compatible control circuits.
• Suitable for electrical control, machinery, automation and OEM equipment manufacturing.

Key Features

• Finder 55.13 miniature general purpose relay.
• Manufacturer part number: 55.13.8.120.2000.
• 120 V AC nominal coil voltage.
• 50/60 Hz AC coil operation.
• 3 CO / 3PDT contact arrangement.
• Three independently wired changeover contact sets.
• 10 A rated contact current.
• 250 V AC rated contact voltage.
• 400 V AC maximum switching voltage.
• PCB connection and mounting configuration.
• Silver cadmium oxide contact material.
• RT I environmental protection category.
• Monostable electromechanical switching.
• Polarity-free AC control input.
• No integrated LED indicator on the specified variant.
• Compact construction for industrial electronic equipment.

Flexible Three-Pole Changeover Switching for Electrical Control Systems

The Finder 55.13.8.120.2000 is particularly useful where an electrical control system requires three changeover contact sets to operate from a single relay coil. Its 3PDT contact arrangement provides three common terminals, three normally closed contacts and three normally open contacts. When the 120 V AC coil is energised, all three contact sets change state together.

This arrangement provides flexibility for control logic, auxiliary switching, status indication and equipment interlocking. For example, one contact set may be used for a control function while other contact sets provide signalling or additional switching functions, provided each circuit remains within the relay's electrical ratings and insulation requirements.

The 10 A contact rating offers useful switching capacity for a compact PCB relay. However, this rating must be considered alongside the electrical characteristics of the connected load. Resistive loads, inductive loads, motors and equipment with high inrush currents can require different switching capabilities. Engineers should check the applicable load-category ratings and switching limits before selecting the relay.

The 120 V AC coil is intended for compatible AC control supplies operating at 50/60 Hz. As a monostable relay, the contact sets return to their normal positions when the coil is de-energised. The AC coil does not require a fixed electrical polarity, making it suitable for conventional AC control circuit arrangements.

Designed for PCB mounting, the Finder 55.13.8.120.2000 can be integrated directly into electronic control assemblies. Its compact 20.7 mm width, 35.8 mm height and 27.7 mm depth make it suitable for equipment where internal space is limited. PCB layout, pin spacing, soldering requirements and electrical clearances should be checked against the manufacturer's dimensional drawings before installation.

The specified AgCdO contact material distinguishes this ordering variant from other Finder 55.13 relays that may use different contact materials. Because silver cadmium oxide contains cadmium, environmental compliance and substitution requirements should be reviewed where relevant. A similar-looking relay with a different contact material or ordering suffix should not automatically be treated as an equivalent replacement.

For maintenance and replacement work, matching the complete 55.13.8.120.2000 part number helps ensure that the replacement has the correct coil voltage, contact arrangement, PCB terminal configuration and contact material. The relay should be installed and serviced only with the equipment safely isolated and in accordance with the manufacturer's instructions.

Typical Applications

• Industrial electronic control assemblies.
• Printed circuit board relay switching circuits.
• Machinery control and OEM equipment manufacturing.
• 120 V AC auxiliary control systems.
• Industrial automation and process control equipment.
• Multi-circuit changeover switching applications.
• Electrical signalling and status indication circuits.
• Control logic and interlocking functions.
• Electronic equipment requiring three relay changeover contacts.
• Maintenance and replacement of compatible Finder 55.13 PCB relays.