The 857-403 is an isolation amplifier designed to process current and voltage input signals. It provides bipolar current and voltage output signals and features configuration via DIP switches. The device is mounted on a DIN rail and measures approximately 94 mm in length, 6 mm in width, with insulation made of polyamide 6.6. It ensures galvanic isolation between the input and output signals through a 3-way separation, operating with a supply voltage of 24 V DC. The 857-403 converts standard unipolar and bipolar signals, amplifies, filters, and electrically isolates analog signals, making it suitable for signal conditioning applications.

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