Finder 45.71.7.009.0410 – 45 Series Miniature PCB relays

Why Choose the Finder 45.71.7.009.0410 Miniature Power Relay?

The Finder 45.71.7.009.0410 is a compact 16 A miniature electromagnetic power relay featuring a 9 V DC sensitive coil and a single normally closed (1 NC / SPST-NC) contact. Part of Finder's established 45 Series, this relay is designed for PCB-mounted electrical switching applications requiring dependable contact operation and a compact installation footprint.

The relay combines printed circuit board mounting with Faston 250 quick-connect terminals, providing flexibility for electronic assemblies and electrical equipment. Its normally closed contact remains closed when the coil is de-energised and opens when the coil is energised, making it suitable for control functions requiring this switching behaviour.

With its 16 A rated contact current, sensitive DC coil and reinforced insulation between coil and contacts, the Finder 45.71.7.009.0410 is a practical choice for industrial automation, machine control, building services and OEM equipment manufacturing.

Key Advantages

• 16 A contact rating: Suitable for switching appropriately rated electrical loads.
• 9 V DC sensitive coil: Designed for compatible low-voltage DC control circuits.
• Normally closed contact: Provides a closed circuit when the coil is not energised.
• PCB and Faston 250 connections: Supports convenient integration into electrical and electronic equipment.
• Reinforced insulation: Provides electrical separation between the control coil and switching contacts.
• Compact construction: Helps optimise installation space in equipment assemblies.
• Monostable operation: Automatically returns to its normal contact state when coil power is removed.
• Finder 45 Series design: Suitable for professional industrial and OEM switching applications.

Key Features

• Finder 45 Series miniature PCB power relay.
• Type 45.71 with PCB and Faston 250 connection arrangement.
• Single normally closed contact configuration.
• 9 V DC sensitive electromagnetic coil.
• 16 A nominal switching current.
• Single-pole, single-throw normally closed switching.
• Monostable, non-latching relay operation.
• Faston 250 terminals with nominal 6.3 mm blade width.
• Reinforced insulation between coil and contacts.
• Suitable for electronic control boards and industrial electrical assemblies.

Reliable Normally Closed Switching for Industrial Control

The Finder 45.71.7.009.0410 uses an electromagnetic switching mechanism to control an electrical contact through a separate DC coil circuit. In its normal, de-energised condition, the relay's normally closed contact completes the switched circuit. Applying the appropriate 9 V DC coil supply opens the contact, while removing the coil supply allows the relay to return to its normal state.

This operating principle makes the relay useful for control circuits that require a normally closed switching function. The 16 A nominal contact rating provides substantial switching capability in a miniature format, although the permissible load must always be assessed according to the operating voltage, load characteristics, switching frequency and inrush current.

The PCB and Faston 250 connection arrangement supports integration into electronic equipment and industrial assemblies. Reinforced insulation between the coil and contacts helps separate the control and switched circuits. Designers should verify the exact relay footprint, coil requirements and application-specific electrical ratings before installation.

Typical Applications

• Industrial automation and machinery control.
• Printed circuit board switching assemblies.
• Electrical control panels and OEM equipment.
• Building automation and electrical control systems.
• Heating, ventilation and equipment control circuits.
• Normally closed load-switching applications.
• Electronic control modules and industrial equipment.
• Electrical equipment manufacturing and maintenance.