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 NES — модульные блоки питания POWER SUPPLY NES-25W — поставка с завода

О изделии — Серия NES — модульные блоки питания POWER SUPPLY NES-25W

Серия NES — модульные блоки питания POWER SUPPLY NES-25W — изделие из линейки «Серия NES — модульные блоки 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 NES — модульные блоки 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

NES SERIES HIGH EFFICIENCY SWITCHING POWER SUPPLY NES25W

Features :

•Universal AC input/Full range

•Protections: Short circuit / Overload / Over voltage / Over temperature

•Cooling by free air convection 100% full load burn-in test

•2 years warranty

Details:

MODEL	NES-25-5	NES-25-12	NES-25-15	NES-25-24	NES-25-48
OUTPUT	DC VOLTAGE	5V	12V	15V	24V	48V
RATED CURRENT	5A	2.1A	1.7A	1.1A	0.57A
CURRENT RANGE	0~5A	0 ~ 2.1A	0-1.7A	0-1.1A	0 - 0.57A
RATED POWER	25W	25.2W	25.5W	26.4W	27.36W
RIPPLE & NOISE (max.) Note.2	80mVp-p	120mVp-p	150mVp-p	200mVp-p	240mVp-p
VOLTAGE ADJ. RANGE	4.75 ~ 5.5V	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%
LINE REGULATION Note.4	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
LOAD REGULATION Note.5	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
SETUP, RISE TIME	500ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)	50ms/230VAC 10ms/115VAC at full load
INPUT	VOLTAGE RANGE	85 ~ 264VAC 120-370VDC
FREQUENCY RANGE	47 - 63Hz
EFFICIENCY (Typ.)	78%	83%	84%	86%	86%
AC CURRENT (Typ.)	0.55A/115VAC 0.35A/230VAC
INRUSH CURRENT (Typ.)	COLD START45A
LEAKAGE CURRENT	<2mA/240VAC
PROTECTION	OVERLOAD	110 ~ 150% rated output power
Protection type: Hiccup mode, recovers automatically after fault condition is removed
OVERVOLTAGE	5.75 - 6.75V \| 13.8 ~ 16.2V \| 17.25- 20.25V \| 27.6 ~ 32.4V \| 55.2 - 64.8V
Protection type: Shut down o/p voltage, re-power on to recover
ENVIRONMENT	WORKING TEMP.	-20 ~ +60°C (Refer to "Derating Curve")
WORKING HUMIDITY	20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY	-40 ~ +85°C, 10 ~ 95% RH
TEMP. COEFFICIENT	±0.03%/°C (0 ~ 45°C)
VIBRATION	10 ~ 500Hz, 2G 10min./1 cycle, period for 60min. each along X, Y, Z axes
SAFETY & EMC (Note 7)	SAFETY STANDARDS Note.6	UL60950-1, CB(IEC60950-1),CCC GB4943.1:2011 approved
WITHSTAND VOLTAGE	l/P-0/P:1.5KVAC l/P-FG:1.5KVAC 0/P-FG:0.5KVAC
ISOLATION RESISTANCE	l/P-O/P, l/P-FG, 0/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, EN61000-6-1, light industry level, criteria A
OTHERS	MTBF	411,47Khrs min. MIL-HDBK-217F (25°C)
DIMENSION	998235mm (LWH)
PACKING	0.3Kg; 45pcs/14.5Kg/0.66CUFT
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 0.1 uf & 47uf parallel capacitor. 3.Tolerance : includes set up tolerance, line regulation and load regulation. 4.Line regulation is measured from low line to high line at rated load. 5.Load regulation is measured from 0% to 100% rated load. 6.For the request of GB4943.1 ,the power supply is only suitable for use in the altitude 2000m below and the non tropical climate condition. 7.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. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.”