Pfannenberg FLZ 541, FLZ 542, FLZ 543 Catalog Page

Heaters, Thermostats & Hygrostats

FLZ 541 – FLZ 543

Twin Thermostats

•The FLZ series of twin thermostats integrates two independently switchable thermostats. They are available with N.C./N.O.1, N.C./N.C. and N.O./N.O. contacts.

•Unlike thermostats with changeover contacts, connected devices can be switched in different temperature ranges.

Data				FLZ 541	FLZ 542	FLZ 543	Unit
Part number		0 ° - 60 °C		17141000000	17142000000	17143000000
		32 -140 °F		17141000010	17142000010	17143000010
Type of contact				N.C. / N.O.	N.C. / N.C.	N.O. / N.O.
				with spring contact	with spring contact	with spring contact
Switching temperature difference					< 7		K
Switching point tolerance					± 4
Max. switching power		N.C.			240 V AC / 10 (2)
		N.O.			120 V AC / 15 (2)
value in brackets ():
inductive load at cos φ = 0.6
		DC			max. 30		W
Operating temperature range					-4 … +179 (-20 … +80)		°F (°C)
Storage temperature range					-4 … +179 (-20 … +80)
Probe type					bimetal
System of protection					IP 20
Weight					95		g
Connection				screw terminal for cable cross-section 0.5 to 2.5 mm²
Approvals					UL, cUL, CE
Suitable for the operation of				fan and heater	heaters/alarm	fans/alarm
Type of mounting				snap fastening for 35mm profile bars according to EN 60715
Color					RAL 7035
1 N.C. = normally closed / N.O. = normally open
2 for 230 V AC operation only
Approvals see page 168					Dimensions

	FLZ 541	FLZ 542	FLZ 543
Dimension
	inches (mm)	inches (mm)	inches (mm)
X		2.32 (59)
Y		3.17 (80.5)		Y
Z		1.5 (38)

Z

Schematics

FLZ 541

FLZ 542

FLZ 543

X

171	Edition 11