ST-03
Sensor Tester, for Namur EN 50 227, 2-Wire DC, 3-Wire DC and 4-Wire DC
- Manufacturer: CARLO GAVAZZI
- Product type:
- SVHC: No SVHC (21-Jan-2025)
| Delivery and price | |
|---|---|
| Units per pack | 1 |
| Price | 87.76 € |
| Current stock | 10+ |
| Lead time | 30 days |
## **Accessories Sensor Tester Type ST-03** - **NAMUR (EN 50 227)** - **• 2-wire DC • 3-wire DC** - **4-wire DC** ## **Product Descri tion p** ## **Orderin Ke g y** —_—_—— The fastest way to verify the ~~SS: —_'._.““—“—~~ Fault function on the tester ~~OO~~ **Type** main function on your sencan be: Wrong sensor (e.g. sor. The tester can be used AC sensors), defect sensor. for: Namur (EN 50 227), 2- The wire is not connected wire DC, 3-wire DC and 4- correct. The fuse in the testwire DC. Connect your sener is burned. The batteri is sor to the terminals on the flat. sensortester. The sensorFor connection se the wiring type (NPN or PNP) and outdiagram on the sensor testput status NO (normally er. To replace the batteries open) and (normally closed) (2x9V, e.g. PP3) or fuse is shown on the correspon(100mA f) remove the screw dent LED. Red LED for NPN on the backside of the senand green for PNP. A buzzer sor tester. will tell you if the output is active. ## **ST-03** ## **T e Selection yp** ## **Ordering number** ## **ST-03** ## **Wiring Diagram** |**GND**<br>**LED**<br>**red**<br>**NPN**|**GND**<br>**LED**<br>**red**<br>**NPN**|**GND**<br>**LED**<br>**red**<br>**NPN**|||**SGN**|**SGN**|**SGN**|||**LED**<br>**green**<br>**PNP**|**LED**<br>**green**<br>**PNP**|**LED**<br>**green**<br>**PNP**||**V+**|**V+**||**Terminals**<br>**Sensortype**<br>**NAMUR**|**GND**<br>**-**|**SGN**<br>**BU(2)**|**V+**<br>**BN(1)**| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| ||||||||||||||||||**DC 2-wire NO**|**BU(4)**|**BN(1)**|**-**| ||||||||||||||||||**DC 2-wire NC**|**BU(2)**|**BN(1)**|**-**| ||**DC 2-wire**||||||||**NAMUR**||||||||**DC 3-wire NO**|**BU(3)**|**BK(4)**|**BN(1)**| ||||||||||||||||||**DC 3-wire NC**|**BU(3)**|**BK(2)**|**BN(1)**| ||||||||||||||||||**DC 4-wire NO**|**BU(3)**|**BK(4)**|**BN(1)**| ||||||||||||||||||**DC 4-wire NC**|**BU(3)**|**WH(2)**|**BN(1)**| (.) refers to the pin numbers. **1** Specifications are subject to change without notice (25.06.99)
Updated at June 9, 2026
Founded in Milan in 1931, Carlo Gavazzi is a globally recognized leader in the design and manufacture of high-quality automation components. For nearly a century, the company has driven technological innovation in the industrial and building automation markets. With ISO 9001-certified production facilities across Europe and Asia, Carlo Gavazzi delivers state-of-the-art solutions tailored for demanding applications, including HVAC, renewable energy, semiconductor manufacturing, and electric vehicle charging infrastructure. Our extensive portfolio of Carlo Gavazzi components focuses heavily on their industry-leading switching and sensing technologies. We carry a comprehensive selection of solid state relays, contactors, and power relays engineered for exceptional reliability and thermal performance. Alongside these robust switching solutions, our range features a wide array of precision sensors, with a strong emphasis on proximity switches and light sensors that are critical for automated manufacturing processes, mobile equipment, and access control systems. Beyond core sensing and switching, the Carlo Gavazzi lineup extends into essential power management, circuit protection, and control devices. This includes highly efficient AC/DC converters, thermal magnetic circuit breakers, and advanced panel instrumentation designed to monitor and optimize energy efficiency. From current sensing transformers to motor starters, engineers consistently trust Carlo Gavazzi to provide competitive, dependable, and forward-thinking components for their most complex automation challenges.
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