40.31.8.024.0000 Finder 40 Series PCB/plug-in Relay 1P 10A 24V AC

The Finder 40.31.8.024.0000 is a compact 1 pole PCB/plug-in relay rated at 12A for PCB mounting or 10A with socket, designed for 24V AC coil voltage applications requiring reliable switching performance in space-constrained installations.

This miniature relay from Finder's proven 40 Series offers versatile mounting options and robust switching capabilities for industrial control systems. The single pole configuration with changeover contacts (SPDT) makes it ideal for applications requiring simple on/off control or switching between two circuits. Its compact 12.4mm width footprint maximises panel space efficiency while delivering dependable performance in demanding industrial environments.

Key Features

• Dual Current Ratings: 12A capacity for direct PCB mounting or 10A with socket provides flexibility for different installation requirements and load types
• Versatile Mounting Options: Compatible with PCB direct mounting, PCB socket mounting, or 35mm DIN rail socket installation for diverse panel configurations
• Wide Temperature Range: Operating range of -40°C to +85°C ensures reliable performance in harsh industrial environments and outdoor applications
• SPDT Contact Configuration: Single changeover contact (1 CO) enables switching between two circuits or simple on/off control applications
• AgNi Contact Material: Silver-nickel contacts provide excellent conductivity and arc resistance for extended operational life
• Compact Design: 12.4mm width and 3.5mm pin pitch maximise space efficiency in high-density control panels
• Multiple Base Compatibility: Works with various Finder bases (95.63, 95.03, 95.P3, 95.83.3, 95.93.3, 95.13) for easy replacement and standardisation

Applications

The Finder 40.31.8.024.0000 PCB relay is commonly used in industrial automation systems, control panels, and machine control applications where space is limited but reliable switching is essential. Typical applications include motor control circuits, lighting control systems, HVAC control panels, and process automation equipment. The 24V AC coil voltage makes it suitable for integration with standard industrial control systems and programmable logic controllers (PLCs).

Standards and Sustainability

This relay is manufactured to Finder's industrial quality standards with UL approval for North American applications. The compact design reduces material usage while the AgNi contact material provides long operational life, minimising replacement frequency.

Manufactured by Finder with product code 40.31.8.024.0000.

Frequently Asked Questions

What's the difference between the 12A and 10A ratings on this relay?

The Finder 40.31.8.024.0000 is rated at 12A when mounted directly to a PCB, but 10A when used with a socket base. This difference is due to thermal considerations - direct PCB mounting provides better heat dissipation through the circuit board, allowing the higher current rating. When using socket mounting, the reduced thermal path limits the current to 10A for safe operation.

Which socket bases are compatible with this relay?

This relay is compatible with several Finder socket bases including 95.63, 95.03, 95.P3, 95.83.3, 95.93.3, and 95.13. The choice depends on your mounting requirements - some are for PCB mounting, others for DIN rail mounting. The 3.5mm pin pitch must match across all compatible bases.

Can this relay switch DC loads as well as AC?

While this relay has a 24V AC coil, the AgNi contacts can switch both AC and DC loads. However, the current ratings may differ for DC loads due to different arc characteristics. For DC switching applications, consult the full datasheet for specific DC current ratings and voltage limitations.

What are the physical dimensions for panel layout purposes?

The relay measures 12.4mm in width with a 3.5mm pin pitch. The pins are 5.2mm long, and the relay weighs just 0.02kg (20 grams). These compact dimensions make it suitable for high-density installations where space is at a premium.

What temperature range can this relay operate in?

The Finder 40.31.8.024.0000 operates reliably across an ambient temperature range of -40°C to +85°C. This wide operating range makes it suitable for both indoor control panels and outdoor installations or harsh industrial environments where temperature extremes may occur.