Passive Components

4 Pole Double Throw Knife Switch with LED Indicator

$58.49

SKU: ATO-HK11-4P

4 pole double throw knife switch is equipped with a resin base, transparent LED indicator, manual operation mode, and optional current 32A/63A/100A/160A/225A, used for breaking or connecting current in a circuit.

4 Pole Double Throw Knife Switch, 63A/100A/160A

$50.98

SKU: ATO-DTKS-4P

4 pole double throw switch comes with 32A/63A/100A/160A/225A current, resin base and manual operation mode. High quality changeover knife switch is usually used in high voltage or extra high voltage power systems to cut or connect power lines.

4 String PV Combiner Box

$466.66

SKU: ATO-PVCB-4S

Low cost 4 string PV combiner box is available with anti-reverse diode, DC circuit breaker, DC fuse and surge protection device, 4 in 1 out, waterproof and dustproof, suitable for all residential, commercial and utility-scale applications.

40A Waterproof Automotive Starter Relay, 12V/24V DC

$64.79

SKU: ATO-ASR-40

Affordable price waterproof car starter relay designed with 40A contact current comes in contact forms of 1Z (1C) or 1H (1A) and offers coil rated voltages of 12V DC or 24V DC. Choose between 4 pin or 5 pin installation options. This automotive starter relay is a key component in an auto's starting system, serving as a crucial link between the ignition switch and the starter motor.

40kV Vacuum Circuit Breaker, 1250A, 50Hz

$11,789.81

SKU: ATO-VCB-40

Lower cost vacuum circuit breaker with 40kv rated voltage for sale online. Indoor vacuum circuit breaker has a switching capacity capable of handling the loads occurring at start-up and shutdown. Opening time is 30ms~60ms, closing time is 50ms~100ms. Acting to protect and control line is the function of vcb.

50A High Voltage DC Contactor, 12V/24V coil

$111.85

SKU: ATO-DCCON-HV50

High voltage DC contactor, normally open type (SPST-NO), 50 amps rated load current of contact circuit, available with 12V or 24V coils, the connection of contact and coil need to be nonpolarity. It is widely used in the DC high voltage field, such as electric car, wind power generation, DC power supply control system and so on.

6 amp 3 pole Miniature Circuit Breaker

$76.85

SKU: ATO-MCB-3P06

6 amp current rating miniature circuit breaker with 6kA excellent breaking capability for its compact size, is designed for the short circuit and overload protection in the AC 50Hz circuit, 230/400V 3 pole voltage.

6 amp 4 pole Miniature Circuit Breaker

$86.79

SKU: ATO-MCB-4P06

4 pole miniature circuit breaker with 6 amps current rating, with C trip characteristic and capable of protecting the system against short-circuit currents up to 6kA. Good quality at lower price, manufactured direct sale.

80A DC Circuit Breaker, 1/2/3/4 Pole

$101.56

SKU: ATO-DCCB-80A

80 amp DC circuit breaker with 125A shell and frame current for sale. Rated impulse withstand voltage of pv circuit breaker is 8 kV. 1 pole, 2 pole, 3 pole and 4 pole can be selected. Working temperature of 80A DC circuit breaker between -25 ℃ and 50 ℃.

Automatic Transfer Switch, 3/4 Pole, 10/20 to 100 Amps

$436.85 $580.23

SKU: ATO-ATS-100

Intelligent automatic transfer switch (ATS), has rated current ranging from 10 amp to 100 amp (optional 10A, 16A, 20A, 32A, 40A, 50A, 63A, 80A, 100A), 3-pole or 4-pole, rated working voltage 400VAC 50Hz and adjustable 0-30s delay time. This intelligent ATS transfer switch features compact size and light weight, easy mounting & wiring, simple operation with microcomputer controller, best automatic and manual switching between normal power and standby power.

Barrier Terminal Block, 10A/20A/30A/60A/100A/150A/200A

$5.32

SKU: ATO-TB-TD

Low price barrier terminal block online for sale, with rated voltage 660V, 10 Pole, current 10A/20A/30A/60A/100A/150A/200A are optional. Barrier terminal block can be applied to connection for various electric equipment.

Blue Violet Laser Module, Adjustable Focus Laser, 405nm 100mW

$55.46

SKU: ATO-LM-D8LASER100

Buy factory priced blue violet laser module from ATO.com, with a wavelength of 405nm and a power of 100mW, providing bright and clear laser points. The laser module supports a power supply range of 3-5V, is compatible with multiple power configurations, and is easy to install. The blue purple laser module has adjustable focus function, allowing users to precisely adjust the size and clarity of the laser point according to their needs.

Circular Connector, 2/3/4/5/6 Pin, M13

$49.21

SKU: ATO-CIRCN-12M

Circular connector has simple and firm locking mechanism, easy to seal, insert and dismantle. Circular connector has 2/3/4/5/6 pin, different shapes of plug & socket to select.

Current Transformer, 30/5A, 75/5A, 100/5A to 400/5A

$116.98

SKU: ATO-CT-3030I

Low cost CT transformer rated frequency 50Hz and 60Hz are optional, current ratio can be 30/5A, 75/5A, 100/5A, 200/5A and 400/5A, accuracy classes can be selected. AC current transformer with high accuracy, fast response and light weight.

DC Voltage Monitoring Relay, Under/Over Voltage, 12V/24V/48V DC

$105.98

SKU: ATO-MR-DVRD

DC voltage monitoring relay with 2 C/O contacts (2 Form C or DPDT) provide protection for the equipment from undervoltage and overvoltage in DC circuit 12V, 24V, 36V or 48V, adjustable trip delay time, LED indicator for working state, DIN rail mounting, compact design, good quality and low price.

Digital Timer Relay, 8 Pin, 12V/24V/220V

$78.85

SKU: ATO-TIMER-TH200

Digital timer relay with 3-digit LED display, on-delay timer, time setting range 0.01~999 second/minute/hour, supply voltages 12V DC, 24V DC or 220V AC. 8-pin timer relay with optional 8-pin mounting socket for DIN Rail, easy to install, high accuracy and wide time delay range.

Electromagnetic Relay, 3PDT, 12/24/110/220V coils

$12.99

SKU: ATO-EMR-HH53P

General purpose electromagnetic relay, 11 pins, 3PDT contact type, available for the common coil voltages of 12V DC, 24V DC, 110V AC and 220V AC, rated load 5A/240V AC 28V DC, compact size, favorable price and high quality.

EMC Input Filter for VFD, 10A/30A/50A/120A/200A to 1000A

$121.62

SKU: ATO-EMC-730

High-performance EMC input line filter has excellent interference suppression capability to the input side of VFD at 3-phase 3-wire AC 250/440V 50/60Hz, available rated current 6A/ 10A/ 30A/ 50A/ 120A/ 200A to 1000A, low leakage current, threaded stud or quick connect, high quality and low price.

Heavy Duty Connector, 4 Pin, 250VAC / 10A

$77.46

SKU: ATO-HDCN-4P

4 pin heavy duty connectors have AC 250V working voltage, 10A working current and pollution degree III. There are 5 different shell items to choose from. Heavy duty connectors have the certificate of CCC, CE, ROHS, RU, CSA, TUV. 4 pin heavy duty connectors with applicable temperature range -40℃~+125℃ (-40℉~+257℉) can be used in harsh environments.

IP66 Aluminum Waterproof Junction Box

$52.46

SKU: ATO-WJB-67

The series of waterproof junction box is made of aluminum alloy die-casting, waterproof rating is IP66. Adopting silicone sealing strip, good sealing performance, waterproof, dustproof, corrosion-resistant, anti-radio frequency interference, easy to process. Aluminum waterproof junction box is very suitable as electrical junction box for indoor and outdoor electrical engineering.