- Home Page /
- Industrial Supplies /
- Industrial Electrical /
- Sensors /
- Current Sensors /
- Current Sensing Switch, AC 0.2 to 30A Adjusta...
0 ratings
Item #:
21257770
Current Sensing Switch, AC 0.2 to 30A Adjustable Normally Open Current Monitoring Relay SZC23 NO AL with LED Indicator
Item #:
21257770
NZD 30
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
Afterpay Information
Split your bill into 4 payments of NZD 7.5 interest-free
Add the item to your cart
Select Afterpay at checkout
Fill in your details
Complete your first payment
and pay the remaining in easy instalments or according to the payment plan you selected
Here’s why you should Afterpay it
Get everything you need now..
Shop thousands of brands and millions of products, online and in-store.
Pay over six weeks.
Make the first payment upfront and the rest over time. Always interest-free when you pay it in 4.
No fees when you pay on time.
We’ll send you reminders and cap late payments to help you get back on track.
(1) Terms and conditions. apply. (2) Installment Agreement. (3) Eligible for customers in. New Zealand, (4) Your final payment plan may vary depending on your credit history.
0 ratings
Write a review
In stock
Imported from USA store
QTY:
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Using this device can not only get more accurate and more timely control, but can also greatly simplify the design and reduce costs.
Buy Now Pay Later
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
Adjustable Sensitivity
The SZC23 relay allows users to set current detection between 0.2 to 30A, ensuring customizable monitoring for various AC applications, enhancing flexibility in performance and usage.
LED Indicator
Equipped with an LED indicator, this switch provides real-time visual feedback on current status, allowing for easy monitoring and quick diagnosis of system performance and potential issues.
Normally Open Design
The normally open design enhances safety by ensuring the circuit remains off until current exceeds set levels, effectively preventing overcurrent risks and potential damage to connected devices.
Product Details
- 2000V resistant outer casing made of self extinguishing ABS material
- Self-powered with LED indicator for convenient working status indication
- High-power MOS tube contactless electronic switch with no limit on opening and closing
- Adjustable action current range of 0.2 to 30A AC with hysteresis less than 1%
- Suitable for AC current measurement, overload protection, and automatic control systems
- SZC23 NO AL CH model with dimensions of 65*25*47mm and hole diameter of 10mm
| Item Weight | 0.5 lbs (230 grams) |
Who Should Buy?
-
Home Automation
Perfect for monitoring current in home appliances, enhancing control over energy usage efficiently and safely.
-
Industrial Applications
Suitable for industrial settings needing reliable current sensing to prevent overloads and equipment damage.
-
DIY Electronics
A great option for hobbyists creating projects that require current monitoring for safe operation.
-
High Current Loads
Not suitable for applications exceeding 30A, as it may lead to malfunction or safety hazards.
-
Low Voltage Circuits
Ineffective for low voltage applications where current sensing below 0.2A is required.
-
Non-AC Use
Not recommended for DC applications, as it is specifically designed for AC current monitoring only.
Product Description
Current Sensing Switch, AC 0.2 to 30A Adjustable Normally Open Current Monitoring Relay SZC23 NO AL with LED Indicator
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the purpose of the Current Sensing Switch, AC 0.2 to 30A?
Answer: The Current Sensing Switch is designed to monitor and control electrical loads by detecting current flow in a circuit ranging from 0.2 to 30A. This allows users to automate tasks or provide safety mechanisms by switching devices on or off based on current levels. For instance, it can be used in home automation systems to turn off appliances when they draw too much current, protecting circuits from overload and enhancing overall energy efficiency. -
Question:
How does the adjustable feature of the SZC23 relay work?
Answer: The adjustable feature of the SZC23 relay allows users to set the threshold current level at which the switch activates. This customization is essential for various applications, ensuring that the relay will operate specifically based on the type of load it's monitoring. For example, in industrial settings, you might set a higher threshold for heavy machinery while maintaining a lower limit for sensitive electrical devices. -
Question:
What does the LED indicator signify?
Answer: The LED indicator on the Current Sensing Switch provides a visual cue regarding the operational status of the device. When the relay is active, the LED lights up, allowing users to easily monitor its functionality at a glance. This is particularly beneficial in environments where immediate visual feedback can prevent mishaps, such as in electrical panels or remote setups. -
Question:
Can this relay be used in a home automation system?
Answer: Yes, the Current Sensing Switch is well-suited for integration into home automation systems. It enables smart control of appliances by detecting current levels. For example, you could set the relay to turn off a heater when it consumes more current than designated, ensuring safety and reducing energy waste when not needed. -
Question:
What types of devices can be monitored with this relay?
Answer: This relay can monitor a wide range of devices, from small appliances to larger systems, as long as they operate within the 0.2 to 30A current range. This includes HVAC systems, home entertainment equipment, and industrial machinery. By implementing this relay, users can safeguard equipment from excessive current draw, potentially extending the lifespan of their devices. -
Question:
Is this switch suitable for outdoor use?
Answer: The Current Sensing Switch is typically designed for indoor applications unless specified otherwise by the manufacturer. Generally, it should be installed in a dry location to prevent moisture damage. For outdoor usage, it is crucial to ensure it is housed in a suitable enclosure that protects it from environmental factors, maintaining optimal performance. -
Question:
What adjustments can be made to the current sensing settings?
Answer: Adjustments to the current sensing settings of the SZC23 relay enable users to precisely define the current thresholds for activation and deactivation. This allows for enhanced control tailored to specific applications. For instance, users can set different thresholds for varying equipment depending on their current draw needs, thereby optimizing energy use and operational efficiency. -
Question:
Can the Current Sensing Switch be reset automatically?
Answer: The SZC23 relay does not typically include an automatic reset feature; it operates with a normally open circuit design that activates based on current detection. However, users can manually reset it after the overload condition has been addressed. This functionality is essential in applications needing manual confirmation of safety before resuming operation, ensuring compliance with safety practices. -
Question:
What safety features does the Current Sensing Switch offer?
Answer: The Current Sensing Switch comes with inherent safety features designed to protect circuits from overload conditions. By monitoring current levels and triggering a switch-off if the specified limit is exceeded, it acts as a proactive measure against potential hazards. This makes it ideal for setups in both domestic and industrial arenas where equipment reliability and user safety are paramount. -
Question:
Where can I buy the Current Sensing Switch in New Zealand?
Answer: You can purchase the Current Sensing Switch, AC 0.2 to 30A Adjustable Normally Open Current Monitoring Relay SZC23 NO AL CH with LED Indicator on Ubuy. This platform offers a wide range of products, ensuring you can quickly find this specific relay along with detailed product descriptions and customer support for a seamless shopping experience.
Lazmin Current Sensors Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
100%
-
4 Star
0%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Platform Trust & Buyer Confidence
NA
Naylz
Verified buyer
“Purchased a YAMATIC 3/4" Shaft Horizontal Pressure Washer Pump 3400 PSI 2.5 GPM as a replacement for my GC190 water blaster. Fits perfectly and works well. Easy transaction and reasonable delivery to New Zealand.”
6 June 2026 · via Trustpilot
EG
Eduardo
Verified buyer
“great service, quick delivery and comunication”
2 June 2026 · via Trustpilot
DR
Dave
Verified buyer
“First time using Ubuy. Simple to use, well packed and faster than expected delivery. Was about the only way to get this item I've been after for almost a year … thank you Ubuy!”
15 May 2026 · via Trustpilot
DD
David
Verified buyer
“First time using Ubuy and very impressed. Items arrived from the USA super fast and are such a top-quality product. I will definitely be back to purchase again. Cannot recommend you highly enough for a hassle-free & efficient service. Thank you so much. I am one very happy customer.”
14 May 2026 · via Trustpilot
J
John
Verified buyer
“Very happy with the light. I wanted something a little different for a bedside lamp and find this is great. Easy to operate with a single button to turn it off and on and control the brightness and colour temperature. The item was sent quickly and a hassle free purchase.”
23 April 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
NZD 30
This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- AC current sensing switch for monitoring
- Mutual inductance principle
- Output switching signal to control automation equipment
- More accurate and timely control
- Simplify design and reduce costs