Why Choose the Finder 55.13.9.012.5001 Miniature PCB Relay?
The Finder 55.13.9.012.5001 is a high-quality 10 A miniature electromechanical relay designed for reliable switching in industrial automation, electronic control equipment and printed circuit board assemblies. Part of the established Finder 55 Series, this industrial relay combines three changeover contacts (3 CO / 3PDT) with a compact PCB-mounted construction, allowing multiple electrical circuits to be controlled using a single relay coil.
Featuring a 12 V DC nominal operating coil, 10 A rated contact current and 250 V AC rated resistive-load contact voltage, the Finder 55.13.9.012.5001 is suitable for a wide range of industrial switching and control applications. Its gold-plated silver nickel contacts (AgNi + Au) offer additional advantages for low-level signal switching, helping maintain consistent electrical contact where reliable control and monitoring are important.
A distinguishing feature of the .5001 variant is its RT III wash-tight construction, which provides enhanced protection against contamination during compatible PCB cleaning processes. Combined with its 140 Ω nominal coil resistance, 1 W coil consumption and operating temperature range of −40 to +85 °C, this relay is a practical choice for OEM manufacturers, control system designers and industrial maintenance engineers.
Key Advantages
- Three changeover contacts (3PDT) allow simultaneous control of three independent circuits.
- 12 V DC operating coil supports integration with compatible low-voltage control electronics.
- 10 A rated contact current provides versatile industrial switching capability.
- Gold-plated silver nickel contacts (AgNi + Au) support reliable low-level signal switching.
- RT III wash-tight enclosure provides enhanced protection during suitable PCB washing processes.
- 250 V AC rated resistive-load switching for compatible electrical applications.
- 140 Ω nominal coil resistance supports predictable DC control circuit design.
- 1 W nominal coil consumption makes the relay suitable for electronic control assemblies.
- Through-hole PCB mounting provides direct integration into equipment circuit boards.
- 20.7 mm housing width helps conserve valuable PCB space.
- Wide −40 to +85 °C operating temperature range supports demanding environments.
- Monostable operation provides straightforward switching without a mechanical latching mechanism.
Key Features
- Finder 55 Series miniature industrial relay.
- 55.13 three-pole PCB relay design.
- 12 V DC nominal coil voltage.
- 3 CO / 3PDT contact configuration.
- 10 A rated resistive-load contact current.
- 250 V AC rated contact switching voltage.
- Gold-plated AgNi contacts for compatible power and signal switching applications.
- RT III wash-tight sealed relay construction.
- 140 Ω nominal coil resistance.
- 1 W nominal coil power consumption.
- Approximately 86 mA nominal coil current.
- Through-hole PCB solder terminals.
- 11-pin connection arrangement.
- 4.8 mm solder pin length.
- 27.7 × 20.7 × 35.8 mm body dimensions.
- −40 to +85 °C operating temperature range.
- Industrial monostable electromagnetic switching mechanism.
- Suitable for OEM electronics, automation equipment and control boards.
Gold-Plated Contacts and Wash-Tight Construction for Industrial PCB Assemblies
The Finder 55.13.9.012.5001 uses a three-pole changeover contact arrangement to switch multiple circuits simultaneously. When its 12 V DC coil is energised, the relay transfers each contact from its normally closed connection to its normally open connection. When coil power is removed, the contacts return to their original positions. This arrangement is particularly useful for equipment requiring coordinated switching, status indication and auxiliary control functions.
The gold-plated silver nickel contact material provides an advantage where control systems handle relatively low electrical signal levels. Gold plating helps reduce the influence of surface films and oxidation on contact resistance. This makes the relay a useful option for compatible monitoring and signal-routing applications, although switching high-energy loads may affect the gold surface and its subsequent low-level switching characteristics.
The RT III wash-tight enclosure is another important feature of this specific variant. Unlike a standard flux-proof relay, the wash-tight construction is intended to provide additional protection during compatible PCB cleaning operations following soldering. The relay should nevertheless be handled according to Finder's assembly and washing recommendations, including any applicable restrictions on cleaning methods, temperatures and processing conditions.
Typical Applications
- Industrial automation and electronic control equipment.
- Three-circuit switching in OEM control boards.
- PCB assemblies requiring wash-tight relay construction.
- Machinery control and auxiliary switching systems.
- Industrial signal routing and monitoring circuits.
- Electronic equipment using 12 V DC relay supplies.
- Building automation and environmental control equipment.
- Heating, ventilation and air conditioning control boards.
- Industrial alarm and indication systems.
- LED lighting control and multi-channel switching equipment.
- Automated equipment and material handling controls.
- Replacement of compatible Finder 55.13 PCB relays.
