The Schneider Electric ZB2BE102 is a 22mm add-on contact block featuring 1 Normally Closed (NC) contact with slow-break operation. It utilizes screw clamp terminals for connection.
The Omron A22-01 is a switch block with a Single Pole Single Throw Normally Closed (SPST-NC) circuit. It offers a contact rating of 10A at 110VAC and uses screw terminal connections.
The Schneider Electric ZB4BZ102 is a complete body/contact assembly for Harmony XB4 series push buttons. It features a single Normally Closed (NC) contact with screw clamp terminals.
The ABB Power Electronics MCB-01 is a contact block featuring a SPST-NC circuit and screw terminal termination. It is rated for 8A @ 127VAC and 5A @ 24VDC.
