P & I
DESIGN
P & I Design Ltd
Tel. 01642 617444
www.pidesign.co.ukTANK 561 - SIS LOGIC
TANK 561 - BPCS LOGIC
SWITCHES
CONTACTORS & OVERLOADS
RELAYS & TIMERS
ISOLATORS & TERMINALS
GENERAL
LEGEND OF GRAPHICAL SYMBOLS (ALL CONTACTS SHOWN IN THE DE-ENERGISED STATE)