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40.51.8.110.5000 Finder Miniature PCB relay 1pole 10A 110V
Finder 40.51.8.110.5000 is a 10 A miniature electromechanical relay with one changeover contact, a 110 V AC coil, gold-plated silver-nickel contacts and PCB or socket mounting.
Why Choose the Finder 40.51.8.110.5000 Miniature Relay?
The Finder 40.51.8.110.5000 is a compact and dependable miniature electromechanical relay designed for industrial controls, automation equipment and electronic switching systems. As part of the established Finder 40 Series, it combines a 110 V AC coil with one changeover contact and gold-plated silver-nickel contact material.
This monostable relay provides reliable galvanic separation between the control and load circuits. An 8 mm coil-to-contact clearance and creepage distance and 6 kV impulse withstand voltage support dependable operation in control equipment. The gold-plated contacts are particularly useful where consistent switching performance is required for lower-level signals.
With a 110 V AC coil, a 10 A rated contact current and an SPDT changeover configuration, the 40.51.8.110.5000 is suitable for switching control circuits, lighting, resistive loads and small motors. Its 5 mm contact pin pitch supports direct PCB installation or use with a compatible Finder 95 Series socket.
Key Advantages
- Compact miniature relay for industrial control and automation equipment.
- 110 V AC coil suitable for mains-powered control circuits.
- 10 A changeover contact supports versatile load switching.
- Gold-plated silver-nickel contacts provide reliable low-level switching.
- 6 kV coil-to-contact impulse isolation supports dependable circuit separation.
- Suitable for direct PCB mounting or compatible Finder relay sockets.
Key Features
- Finder 40 Series miniature PCB/plug-in relay.
- One changeover contact with SPDT configuration.
- 10 A rated contact current.
- 110 V AC coil.
- 6.9 kΩ nominal coil resistance.
- Gold-plated silver-nickel contact material.
- 5 mm contact pin pitch.
- Flux-proof RT II enclosure for PCB assembly applications.
Reliable Switching for Industrial Control Systems
Electromechanical relays such as the Finder 40.51 allow an AC control signal to operate a separate electrical load while maintaining galvanic isolation between the circuits. The changeover contact provides normally open and normally closed switching paths, offering flexibility when designing control panels and automated equipment.
Gold-plated contacts help maintain reliable electrical performance when switching lower-level signals, while the relay’s compact enclosure makes efficient use of PCB space. Compatibility with Finder 95 Series sockets also provides convenient installation and replacement options.
Typical Applications
- Industrial control panels and automation equipment.
- Printed circuit boards and electronic assemblies.
- Machine control interfaces.
- Lighting and resistive load switching.
- Small single-phase motor control.
- Timers, interface modules and building controls.
Technical Specifications
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| Device Type | Plug-in Relay | |
|---|---|---|
| Mounting Type | PCB, Plug-in socket | |
| Load Voltage | 400 V AC | |
| Switching Current (A) | 10 A | |
| Coil / Supply Voltage | 110 V AC | |
| Contacts | 1 C/O | |
| Manufacturer | Finder | |
| Series | 40 Series | |
| Model | 40.51.8.110.5000 | |
| Product type | Miniature electromechanical relay | |
| Contact configuration | 1 CO / SPDT | |
| Rated contact current | 10 A | |
| Maximum peak current | 20 A | |
| Rated contact voltage | 250 V AC | |
| Maximum switching voltage | 400 V AC | |
| Rated load in AC-1 | 2,500 VA | |
| Rated load in AC-15 | 500 VA at 230 V AC | |
| Single-phase motor rating | 0.37 kW at 230 V AC | |
| Coil voltage | 110 V AC, 50/60 Hz | |
| Coil type | AC, monostable | |
| Coil operating range | 88–121 V AC | |
| Coil resistance | 6.9 kΩ | |
| Rated coil current | 9.4 mA at 50 Hz | |
| Rated coil consumption | 1.2 VA at 50 Hz | |
| Contact material | Silver nickel with gold plating | |
| Coil-to-contact impulse withstand voltage | 6 kV | |
| Coil-to-contact clearance and creepage | 8 mm | |
| Protection category | RT II, flux proof | |
| Mounting type | PCB or compatible socket | |
| Contact pin pitch | 5 mm | |
| Dimensions (L × W × H) | 29 × 12.4 × 25 mm |
Frequently Asked Questions
What is the Finder 40.51.8.110.5000 used for?
This miniature relay is used to switch electrical loads and control signals in industrial automation, electronic equipment and control panels.
What coil voltage does this relay require?
The 40.51.8.110.5000 has a 110 V AC coil designed for operation at 50/60 Hz.
What contact configuration does the relay provide?
The relay provides one changeover contact, also known as a single-pole double-throw or SPDT contact.
What is special about the relay’s contacts?
The relay uses gold-plated silver-nickel contacts, providing reliable switching performance for general-purpose loads and lower-level signals.
How is the Finder 40.51.8.110.5000 installed?
The relay can be soldered directly to a printed circuit board or fitted into a compatible Finder 95 Series socket.
Trusted by Control and Automation Professionals
Finder 40 Series relays are widely used by control engineers, panel builders and equipment manufacturers for dependable switching and straightforward integration into industrial and electronic systems.
