Timer Relay Electromagnet

Adjustable Delay Timer Relay Details

The time relay is a very important component in the electrical control system. Generally divided into two types: power-on delay and power-off delay. From the principle of action, there are electronic, mechanical, etc. The electronic type uses the principle of capacitor charging and discharging combined with electronic components to achieve delay action. There are many mechanical styles, and there are airbag styles that use airbags and springs.

Wiring method of time relay:

1. Control wiring: consider it as a DC relay;

2. Work control: Although the control voltage is connected, whether it plays a control role is determined by the timer on the panel;

3. Functional understanding: it is a switch, single-pole double-throw, with a movable arm, just like the movable arm of a common knife switch;

4: Load wiring: the neutral wire or negative terminal of the power supply is connected to the neutral wire or negative terminal of the electrical appliance;

5. Working principle: during the time when the timer is invalid, it is equivalent to the normal light switch off state. When it is effective, the relay will act, and the electrical appliances will be energized to work, which is equivalent to the normal light switch on state.

Ordering Information

FAQ：

1: How do you shipping?
A: FOB Nanjing or CIF.

2: What should I do if the quality is damaged?
A: If there is any damage, the customer can confirm it with a photo, and once it is free, it will not be free or the damage will be reduced.

3: How many R&D person in your factory ?
A: So far we have 20

4: Are they UL approved?
A: Yes, we have.

Characteristics

Models		TKB2B	TKB4B
Rated supply voltage		120VAC, 230VAC 50/60Hz; DC24V
Operating voltage range		Rated voltage 85-110% (90%-110% is DC12V)
Power consumption		3.5W
Max. output load		5A, 250 VAC (p.f.=1)	3A, 250 VAC (p.f.=1)
Min. output load		10 mA, 17 VDC
Repetitive error		±2% (FS max.)
Setting error		±5% (FS max.)
Voltage error		±2% (FS max.)
Temperature error		±2% (FS max.)
Resetting time		Min. time: 0.2 sec
Insulation resistance		100MΩ (DC500V)
Dielectric strength		Between current-carrying and Non-current-carrying parts 2000V 50/60Hz min
		Between control output terminals and operating circuit1500V 50/60Hz min
		Between contacts 1000V 50/60Hz min
Vibration resistance	Destruction	10~55Hz with 0.75mm single amplitude each in 3directions for 2 hours each
	Malfunction	10~55Hz with 0.5mm single amplitude each in 3 directions for 10 minutes each
Shock resistance	Destruction	30G
	Malfunction	10G
Ambient temperature		-10ºC~55ºC
Ambient humidity		35%~85%RH
Life expectancy	Mechanical	＞107 (under no load, at 1,800 operations/hour)
	Electrical	＞105
Weight		Approx. 60g

Up/Down Selectable Type

Adjustable Delay Timer Relay Dimensions (mm)