RT424012

RT424012 power relays are current-controlled electro-mechanical devices capable of handling currents above 2 amperes. These AC or DC powered single pole relays are designed primarily for applications in the automotive, commercial, industrial, and residential markets. The RT424012 power relays feature a positive contact flipper for increased contact stability during high in-rush periods, as well as a removable contact arm for easy replacement.

Applications

Typical applications for RT424012 power relays include motorized heaters and fans, HVAC systems, commercial irrigation systems, electric power wheels, water heaters, electric ovens, refrigerators, washing machines, and many other types of devices. These relays are ideal for situations where currents exceeding 2 amperes, or those with high inrush loads, are required.

Working Principle

Under normal operating conditions, the RT424012 power relay\'s contacts remain in the open position. When power is applied to the relays internal contact flipper, it gets thrown into the closed position. This causes the internal armature to be rapidly magnetized, allowing current to flow through the relay contacts, completing the circuit. When power to the relay is removed, both the contact flipper and internal armature lose their magnetism and spring back into the open position, breaking the circuit.

Benefits

RT424012 power relays offer several benefits, including their high current rating, low resistance contacts, built-in reverse polarity protection, dust and corrosion resistance, and compatibility with DC and AC power. The positive contact flipper also supports high in-rush currents, helping to ensure reliability even when large loads are switched on and off.

Limitations

The RT424012 relays are not designed to handle currents exceeding 20A. Additionally, the relays should not be used in situations where rapid switching is required or if unexpected over-loads are a possibility.