ALPHA RELAY AR221 (4 CONTACT) TWO ELEMENT HAND RESET REVERSE ACTING FLAG SELF RESET CONTACTS FOUR CONTACTS NO ADDITIONAL TIME DELAY CASE SIZE E4 (4U HIGH) CONTACT ARRANGEMENT: 0NO/ 4NC VOLTAGE RATING: 125V DC BACK EMF SUPPRESSION DIODE: NOT FITTED
6GK1503-3CA00 SIEMENS PB OLM/P12 V4.0 OPTICAL LINK MODULE W. 1 RS485 AND 2 PLASTIC-FOC-INTERFACE (4 BFOC-SOCKETS), WITH SIGNAL. CONTACT AND MEASURING OUTPUT, 4 BFOC-CONNECTORS INCLUDED