Finder 40.61.8.125.1000 – 40 Series PCB relays

Why Choose the Finder 40.61.8.125.1000 Miniature Power Relay?

The Finder 40.61.8.125.1000 is a miniature electromechanical power relay from the Finder 40 Series, designed for electrical switching, industrial automation and electronic control equipment. The part number identifies a 40.61 single-pole relay with an AC coil configuration and a 16 A rated changeover contact, making it suitable for appropriately rated control and load-switching applications.

The Finder 40.61 relay family combines compact construction with substantial switching capability. Its single-pole double-throw (SPDT) contact arrangement provides both normally open and normally closed connections, allowing engineers to control separate electrical circuits using a single electromechanical relay.

The 40.61.8.125.1000 part number indicates a 125 V AC coil designation; however, this exact voltage variant is not listed in the standard published Finder 40 Series AC coil selection table, so its nominal operating voltage should be confirmed against the exact-part manufacturer documentation before installation. The established 40.61 contact platform provides a 16 A rated current and 250 V AC rated switching voltage.

Key Advantages

• 16 A rated contact current supports switching of appropriately rated electrical loads.
• AC coil configuration is designed for integration with compatible alternating-current control supplies.
• Single changeover contact (SPDT) provides normally open and normally closed switching functions.
• 250 V AC rated switching voltage supports industrial control and electrical equipment applications.
• 4000 VA AC1 resistive switching capacity for suitable loads within the standard 40.61 contact ratings.
• Compact miniature construction helps conserve space within electrical assemblies.
• PCB and plug-in relay platform supports flexible equipment integration.
• 6 kV coil-to-contact impulse withstand voltage provides robust electrical insulation.
• Monostable operation enables predictable energise-to-switch control.
• Finder 40 Series design supports standardised relay selection and maintenance.

Key Features

• Finder 40 Series miniature electromechanical power relay.
• 40.61 relay type with one changeover contact.
• 125 V AC coil designation identified by the supplied part number, subject to exact-part confirmation.
• AC coil version identified by Finder coil code 8.
• 1 CO / SPDT contact configuration.
• 16 A rated contact current.
• 250 V AC rated switching voltage.
• 400 V AC maximum switching voltage for the standard 40.61 configuration.
• 4000 VA AC1 resistive switching capacity.
• 750 VA AC15 switching capacity at 230 V AC for the standard 40.61 configuration.
• 6 kV impulse withstand voltage between coil and contacts.
• 8 mm clearance and creepage distance between coil and contacts.
• 5 mm contact pin pitch for the 40.61 relay family.
• Monostable, non-latching operation.
• Compact PCB-compatible relay construction.

Dependable AC-Controlled Switching for Industrial Automation

The Finder 40.61.8.125.1000 belongs to a relay family designed to provide an electrical interface between AC control circuits and separately supplied electrical loads. When the coil is energised at its specified operating voltage, the relay transfers its changeover contact from the normally closed position to the normally open position. When the coil is de-energised, the contact returns to its normal state.

The Finder 40.61 configuration offers a 16 A changeover contact in a miniature housing, making it suitable for industrial control panels, OEM equipment and electronic assemblies requiring compact electromechanical switching. Its normally open and normally closed connections allow a single relay to perform a range of auxiliary control functions.

The standard 40 Series design supports PCB integration and compatible socket mounting. Direct PCB installation is useful for compact electronic assemblies, while socket-based mounting can simplify maintenance and relay replacement in suitably designed control equipment.

Before specifying this exact variant, engineers should confirm the 125 V AC coil designation with Finder because it is not included in the standard published AC coil voltage selection. The connected load must also be assessed against the appropriate contact ratings, particularly when switching motors, inductive equipment or circuits with high inrush currents.

Typical Applications

• Industrial automation and machinery control.
• AC-operated electrical control circuits.
• Electrical control panels and relay interfaces.
• OEM electrical and electronic equipment.
• PCB-mounted power switching circuits.
• Auxiliary switching for contactors and control devices.
• Building automation and equipment management.
• Industrial monitoring and signalling circuits.
• Electrical load switching and control systems.
• Equipment maintenance and relay replacement applications, subject to exact-part compatibility.