Single Function Time Relay WTT8-B1

Function Features:

– Single-function relay with a possibility of time setting by a potentiometer.

– Choice of 2 functions: A: Delay ON B: Delay OFF – Time scale 0.1 s

– 10 days divided into 10 ranges.

– Relay status is indicated by LED.

– 1-MODULE, DIN rail mounting.

Product Detail

Suitable for applications where function and time requirements are known.
Time switch, possible to be used for pump decay time after switching the heating off, switching off fans.

Technical parameters	WTT8-A1/B1	WTT8-A2/B2	WTT8-At/Bt
Function	A: delay ON; B: delay OFF
Supply terminals	A1-A2
Voltage range	AC/DC 12-240V(50-60Hz)
Burden	AC 0.09-3VA/DC 0.05-1.7W
Voltage range	AC 230V(50-60Hz)
Power input	AC max.6VA/1.3W	AC max.6VA/1.9W
Supply voltage tolerance	-15%;+10%
Supply indication	green LED
Time Ranges	0.1s-10days,ON,OFF
Time setting	potentiometer
Time deviation	10%-mechanical setting
Repeat accuracy	0.2%-set value stability
Temperature coefficient	0.05%/℃,at=20℃(0.05%℉，at=68℉)
Output	1×SPDT	2×SPDT	1×SPDT（del）+1×SPDT(ins）
Current rating	16A(AC1)
Switching voltage	250VAC/24VDC
Min.breaking capacity DC	500mW
Output indication	red LED
Mechanical life	1×107
Electrical life(AC1)	1×105
Reset time	max.200ms
Operating temperature	-20℃ to+55℃（-4℉to131℉）
Storage temperature	-35℃ to+75℃（-22℉to158℉）
Mounting/DIN rail	Din rail EN/IEC 60715
Protection degree	IP40 for front panel/IP20 terminals
Operating position	any
Overvoltage category	III.
Pollution degree	2
Max.cable size(mm 2)	solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12)
Tightening torque	0.4Nm
Dimensions	90×18×64mm
Weight	W240-61g,A230-61g	W240-81g,A230-80g
Standards	EN 61812-1,IEC6947-5-1