What is the difference between a contactor and a relay?

A contactor is built for switching power circuits repeatedly at high current, often with motor duty ratings (AC-3) and arc-suppressing chambers. A relay switches control signals at low current. In practice: contactor for the motor, relay in the control circuit that drives the contactor coil.

How do I calculate the correct contactor size for a motor?

Use the motor's full-load current, apply the AC-3 rating for the operating voltage, and allow for the number of starts per hour. As a rule of thumb, the contactor's AC-3 rating should be at least equal to the motor FLC, then step up one frame if the duty is heavy.

Do you supply the coil voltage I need?

Coil voltages are specified per order. Send the model number, coil voltage and frequency you require and we will confirm availability and lead time.

Are auxiliary contacts included?

Base models come with the standard auxiliary contact configuration for that frame. Add-on auxiliary blocks and mechanical interlocks can be quoted with the contactor.

Серия S — импульсные источники питания Single output switching power supply S-120W — поставка с завода

О изделии — Серия S — импульсные источники питания Single output switching power supply S-120W

Серия S — импульсные источники питания Single output switching power supply S-120W — изделие из линейки «Серия S — импульсные источники питания» производства ELEHPD. Раздел «Промышленная автоматика» включает датчики, источники питания и коммутационные устройства для шкафов управления и автоматизированных линий: индуктивные и фотоэлектрические датчики, DIN-источники, твёрдотельные реле. Изделия изготавливаются по стандартам IEC/EN, имеют маркировку CE и поставляются напрямую с завода дистрибьюторам, оптовым покупателям и сборщикам щитового оборудования. Технические характеристики и коммерческое предложение предоставляются по запросу.

Область применения

Типовые области применения: распределительные щиты и вводно-распределительные устройства жилых и коммерческих объектов; промышленные установки и машиностроение; объекты инфраструктуры и электроснабжения; проекты OEM-заказчиков и щитовых сборок.

Как правильно выбрать: Серия S — импульсные источники питания

При подборе укажите: номинальный ток, отключающую способность, количество полюсов, тип характеристики (B, C или D), род тока и напряжение, способ монтажа (DIN-рейка, панель), а также климатическое исполнение. Наши инженеры подберут аналог по вашему спецификации или по образцу.

Технические характеристики

Mostly popular by customer 120w 12v 24v single output switching power supply
Features :

• AC input range selectable by switch

• Protections:Short circuit/Over load/Over voltage

• Cooling by free air convection

• 100% full load burn-in test

• Fixed switching frequency at 83KHz • 2 years warranty

Model	S-120-5	S-120-7.5	S-120-12	S-120-15	S-120-24	S-120-48
Output	DC Voltage	5V	7.5V	12V	15V	24V	48V
Rated Current	24A	16A	10A	8A	5A	2.5A
Current Range	0~24A	0~16	0~10A	0~8A	0~5A	0~2.5A
Rated Power	120W	120W	120W	120W	120W	120W
Ripple & Noise (max.) Note.2	100mVp-p	125mVp-p	125mVp-p	125mVp-p	150mVp-p	150mVp-p
Voltage Adj. Range	4.5~5.5V	6.75~8.25V	10.8~13.2V	13.5~16.5V	21.6~26.4V	43.2~52.8V
Voltage Tolerance Note.3	±2.0%	±1.0%	±1.0%	±1.0%	±1.0%	±1.0%
Line Regulation	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
Load Regulation	±1.0%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
Setup,Rise time	1000ms, 30ms at full load
Hold time (Typ.)	20ms at full load
Input	Voltage Range	88 ~ 132VAC/176 ~ 264VAC selected by jumper or switch 248 ~ 370VDC
Frequency Range	47~63HZ
Efficiency(Typ.)	76%	78%	80%	81%	83%	84%
AC Current(Typ.)	3.15A/115VAC 1.5A/230VAC
Inrush Current (Typ.)	COLD START 20A/115VAC 40A/230VAC
Leakage Current	<1mA / 240VAC
Protection	Over Load	105 ~ 150% rated output power
Protection type : Hiccup mode, recovers automatically after fault condition is removed
Over Voltage	5.75 ~ 6.75V	8.63~10.13V	13.8 ~ 16.2V	17.25 ~ 20.25V	27.6 ~ 32.4V	55.2~64.8
Protection type : Hiccup mode, recovers automatically after fault condition is removed
Environment	Working Temperature	-10 ~ +60°c (Refer to "Derating Curve" )
Working Humidity	20~90% RH Non-condensing
Storage temp.& humidity	-20~+85°C, 10~95%RH
Temp. coefficient	±0.03%/°C (0~50°C)
Vibration	10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes
Safety & EMC (Note 4.)	Safety Standards	UL1012, UL60950-1, TUV EN60950-1, CCC GB4943 approved
Withstand Voltage	I/P-O/P:1.5KVAC I/P-FG:1.5KVAC O/P-FG:0.5KVAC
Isolation Resistance	I/P-O/P, I/P-FG, O/P-FG:100M Ohms/500VDC/ 25°c / 70% RH
EMC Emission	Compliance to EN55022 (CISPR22) Class B, EN61000-3-2,-3
EMC Immunity	Compliance to EN61000-4-2,3,4,5,6,8,11, EN55024, light industry level, criteria A
Others	MTBF	314.9K hrs min. MIL-HDBK-217F (25 °c)
Dimension	1999838mm (LWH)
Packing	0.65Kg; 20pcs/14.2Kg/0.8CUFT
Note	1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25°C of ambient temperature. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1uf & 47uf parallel capacitor. 3. Tolerance : includes set up tolerance, line regulation and load regulation. 4. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives.