68.54.9.012.4300 Finder 4 NO Contacts 12V DC Power Relay

Why Choose the Finder 68.54.9.012.4300 Power Relay?

The Finder 68.54.9.012.4300 is a robust high-power PCB relay with four normally open contacts (4 NO), designed for switching substantial electrical loads in industrial control equipment and power electronics systems. With a 12 V DC coil and contact capacity up to 40 A per pole, this relay allows reliable switching of multiple high-current circuits from a single compact device.

Part of the Finder Series 68 high-power relay range, this model is engineered for integration into printed circuit boards and offers dependable switching performance under demanding electrical conditions. The relay uses durable AgSnO₂ contact material, which provides excellent resistance to inrush currents and ensures long service life when switching heavy loads such as heaters, compressors and power supplies.

The 68.54 relay is widely used in applications such as EV charging stations, industrial heating equipment, renewable energy systems and power management modules where reliable high-current switching and compact PCB installation are required.

Key Features

• 4 NO contact configuration for switching multiple power circuits.
• Rated switching current up to 40 A per pole.
• 12 V DC coil voltage for industrial control systems.
• PCB mounting design for integration into power electronics.
• AgSnO₂ contact material designed for high inrush current loads.
• Peak current capability up to 300 A (1 ms).
• Maximum switching voltage up to 400 V AC.
• Contact gap ≥ 4 mm for strong electrical isolation.
• Flux-proof enclosure (RT II) suitable for automated PCB assembly.
• Reinforced insulation between coil and contacts for enhanced safety.

Technical Specifications

• Manufacturer: Finder
• Series: 68 Series high-power relays
• Model: 68.54.9.012.4300
• Product type: High-power PCB relay
• Contact configuration: 4 NO (4PST-NO)
• Rated contact current: 40 A per pole
• Maximum peak current: 300 A (1 ms)
• Rated switching voltage: 250 V AC
• Maximum switching voltage: 400 V AC
• Contact material: AgSnO₂ (silver tin oxide)
• Coil voltage: 12 V DC
• Rated coil power: approx. 2.9 W
• Operate time: approx. 25 ms
• Release time: approx. 3 ms
• Mechanical life: 1 × 10⁶ operations
• Electrical life: approx. 30 × 10³ operations at rated load
• Mounting: Printed circuit board (PCB)
• Protection category: RT II (flux-proof)
• Operating temperature: −40 °C to +70 °C

Typical Applications

• Electric vehicle charging equipment.
• Industrial heating and high-power load control.
• Renewable energy and photovoltaic power systems.
• UPS and power management equipment.
• Industrial automation and electrical control systems.

Trusted by Power Electronics Engineers

Finder high-power relays are widely used by engineers and equipment manufacturers worldwide for reliable switching of high-current loads in modern power electronics and industrial automation systems.