![]() ![]() If using an MC4 assembly tool, clamp the prongs over the male connector’s prongs.If using your fingers, squeeze the male connector’s prongs together until they release from the female connector.To safely disconnect the MC4 connectors, you can use your fingers or an MC4 assembly/disassembly tool for added leverage. The male connector’s prongs should latch onto the body of the female connector. You should hear an audible “click,” indicating that the connectors have securely latched together. Push the male and female connectors together.Align the male and female MC4 connectors to face each other.Step 8: Connect & Disconnect Assembled MC4 ConnectorsĪfter successfully crimping and assembling your MC4 connectors, you can connect them to complete the circuit. Visually inspect that the rubber seal is properly situated with no copper wire exposed.Hand-tighten the threaded end cap, then use the torque wrench to tighten it.Insert the female pin into the open end on the male connector until it clicks into place, signaling it is fully seated.Slide the end cap and rubber seal over the female pin, with the seal oriented groove-side inward.Remove the end cap and internal rubber seal from the male MC4 connector body. ![]() To insert the female pin into the male connector: Step 7: Insert the Female Pin into the Male MC4 Connector Repeat the same crimping procedure (as detailed in step 4) but use a female pin this time. It is important not to over-tighten beyond the recommended torque range, as this can damage the plastic housing.Visually inspect that the rubber seal is evenly situated inside the connector body with no copper wire exposed.Then use a torque wrench with the MC4 socket head to tighten the cap. Hand-tighten the threaded end cap to secure it initially.You should feel it snap into place within the housing. Insert the male pin into the open end of the female connector.Position the seal with the grooved side facing the pin. Slide the end cap and rubber seal over the male pin you just crimped.Disassemble the female connector by unscrewing the threaded end cap and removing the internal rubber seal.Now that the male pin is securely crimped, you can insert it into the female MC4 connector: Step 5: Insert the Male Pin into the Female MC4 Connector Give the pin a firm pull test to confirm it is properly secured to the cable.It should be centered on the conductor with no insulation in the crimped area. Allow the handles to open fully afterward. Slowly close the crimp tool handles completely to crimp the pin fully.Avoid pushing the insulation into the barrel. With your other hand, firmly push the cable into the pin barrel until no copper is exposed.Position the crimping tool handles so the pin is lightly held but not compressed.Insert the pin into the proper-sized slot on the MC4 crimping tool.With the cable prepared, you can now crimp on the male MC4 pin: Any leftover insulation under the crimped connector can prevent proper electrical contact. ![]()
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