12V Changeover Relays
A 12 Volts DC changeover relay, also known as a switch-over relay, is a crucial component in electrical systems. They are commonly found in; cars, vans, HGVs, forklift trucks, marine watercraft, plant equipment and agricultural machinery running on 12Vdc. The primary function of a changeover relay is to switch the circuit from one position to another when the internal coil is energized. This switch-over function occurs in the power line and is typically designated by pins 30 for "line in" and 87/87a for the "line switch". The coil of the relay is typically designated by pins 85 and 86. There are various build variations to the changeover relay, including latching and suppressed versions incorporating diodes and resistors.
One of the most common uses of a 12V changeover relay is in automotive lighting systems. For instance, it can be used to switch the positive line from the dipped beam position to the high beam position. This allows for easy control of the headlights without the need for manual switching. The relay acts as a bridge between different positions, ensuring a smooth transition between them.
What is a Changeover Relay?
DIN 72552 Contact Terminal Number Guide
 .jpg) |
Durite 12V 25A latching relay with a sealed resistor and without bracket. 12 Volts 25 Amps latching relay with five 6.3mm blade terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 15/25A micro changeover relay with a sealed resistor and no bracket. 12 Volts 15-25 Amps relay with two 6.3mm and three 4.8mm terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 15/25A Micro changeover relay with sealed diode and no bracket. 12 Volts 15-25 Amps relay with two 6.3mm and three 4.8mm terminals.
Excl VAT
 .jpg) |
Durite aftermarket 12Vdc 20/30A micro changeover relay with a sealed diode. 12 Volts 20-30A relay with two 6.3mm and three 4.8mm terminals.
Excl VAT
 .jpg) .jpg) |
Durite 12Vdc 30/40A micro changeover relay with a resistor and no bracket. 12 Volts 30-40 Amps relay with two 6.3mm and three 4.8mm blade terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 20/30A mini changeover relay. 12 Volts 20-30A switch relay. Replaces Hella: 4RD003520-13, 4RD00352013 and Lucas: SRB501.
Excl VAT
 .jpg) |
Durite 12Vdc 20/30A mini changeover relay with sealed resistor. 12 Volts 20-30 Amps relay. Replaces Bosch: 0.332.209.159 and Tyco: 04848879AA.
Excl VAT
 .jpg) |
Durite 12Vdc 20/30A mini changeover relay with 'A' type termination, sealed resistor and no bracket. 12 Volts switch relay with five 6.3mm blade terminals.
Excl VAT
 .jpg) |
Durite 12Vdc 30/40A aftermarket mini changeover relays with brackets. 12 Volts 30-40 Amps switching relays with five 6.3mm blade terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 20/30A mini changeover relay with bracket and 'A' type termination. 12 Volts switch relay replaces Lucas: SRB527 and Bosch: 0.332.204.401.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 20/40A mini changeover relay with a sealed diode. 12 Volts 20-40A relay. Replaces Lucas: SRB506, Bosch: 0.332.209.152 and 0.332.209.158.
Excl VAT
 .jpg) |
Durite 12Vdc 30/40A bulk aftermarket changeover relay with inbuilt diode and bracket. 12 Volts 30-40 Amps switch relay with five 6.3mm blade terminals.
Excl VAT
 .jpg) |
Durite 12Vdc 40/70A heavy-duty changeover relay with bracket. 12 Volts 40-70 Amps switching relay with two 6.3mm and two 9.5mm blade terminals.
Excl VAT
 .jpg) .jpg) |
Durite 12Vdc 80/100A heavy-duty changeover relay without a bracket. 12 Volts 80-100 Amps relay with two 6.3mm and three 9.5mm blade terminals.
Excl VAT
 .jpg) .jpg) |
Durite 12Vdc pulse input flip-flop relay. Individually programmed PIC-controlled relays. Pulse input triggers output on and off.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite 12Vdc 10/15A adjustable Delay-On or Delay-Off timer relays. 12 Volts 10-15 Amps relays with a manually settable range from 0.5 seconds to 6 hours.
Excl VAT
 .jpg) .jpg) .jpg) |
Bulkhead mounted socket for flasher units and relays. The socket accepts up to four 2.8mm and five 6.3mm blade terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Bulkhead mounted socket for controllers, flasher units and relays. The socket accepts up to four 2.8mm, three 6.3mm and two 10.5mm blade terminals.
Excl VAT
 .jpg) .jpg) |
Durite universal flying socket for flasher units and relays. The socket accepts up to five 6.3mm blade terminals.
Excl VAT
 .jpg) .jpg) |
Durite's 4-way micro relay holder. The unit will accommodate four standard Make and Break relays or 4 standard changeover relays.
Excl VAT
 .jpg) .jpg) |
Durite 7-way micro (slim) relay holder for panel mounting. The unit will accommodate seven slimline Make and Break or changeover relays.
Excl VAT
 .jpg) .jpg) .jpg) |
Durite bulkhead socket for micro relays. The socket accepts up to two 2.8mm, three 4.8mm and two 6.3mm terminals.
Excl VAT
 .jpg) .jpg) .jpg) |
Bulkhead socket for heavy-duty relays. The socket accepts up to four 2.8mm, two 6.3mm and three 10.5mm blade terminals.
Excl VAT