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The difference of TP and TPN in circuit breakers is the ability of the switch to hold a neutral position. With TPN, a neutral switch position is not possible. With TP, the breaker can be held in a neutral position.

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10y ago
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12y ago

TPN means three pole with one pole neutral connected.

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Q: What is meant by tp and tpn circuit breakers?
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Is there an error if the upstream circuit breaker is 16A TP and the downstream circuit breaker is 16A TPN?

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