The M-0127A AC Current Relay guards against excessive circulating current using the circulationg current method or the ∆VAR® 1 method. The M-0127A can be used in other current- and voltage-sensing applications. Its adjustment range is 0.01 to 0.1 A.

• M–0127A intended for use in 0.2 A circulating current circuit of paralleled LTC transformers to guard against damaging excessive circulating current
• M–0170A prevents damage to LTC transformer’s switching mechanism under excessive loads 

Available in:

• M–0127A: 0.01 to 0.1 Amps
• M–0170A: 0.2 to 0.4 Amps

Both relays can be used in other current and voltage-sensing applications.