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/Schneider Electric HVAC Sensors
Authorized Schneider Electric Distributor

Schneider Electric HVAC Sensors

Reliable sensing solutions for HVAC and building automation systems. Monitor current, pressure, and environmental conditions with precision Schneider Electric components.

Current SwitchesPressure SwitchesLiving Space Sensors
Schneider Electric Sensors for HVAC and Building Automation

Veris & Hawkeye Current Sensors & Transducers

Veris and Hawkeye current sensors and transducers are the industry standard for HVAC equipment monitoring in commercial building automation systems. Current switches detect fan and pump operation by sensing motor current without direct circuit contact. Current transducers output an analog signal proportional to measured current for precise load monitoring and energy management. Common applications include fan proving in AHUs, pump status monitoring, belt loss detection, and VFD load verification. As an authorized Schneider Electric distributor, NSI carries the full Veris and Hawkeye line with fast lead times and expert technical support.

Fan ProvingPump MonitoringHVAC ControlBAS Integration
Adjustable Trip Point
H308Low Stock (4)
H308
USD $60.77
Type
Switch
Housing
Micro Split-Core
Range (AC)
0.75–50 A
Output
N.O. 1A @ 30VAC/DC
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H608Low Stock (4)
H608
USD $37.00
Type
Switch
Housing
Mini Split-Core
Range (AC)
0.5–175 A
Output
N.O. 1A @ 30VAC/DC
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H908Low Stock (4)
H908
USD $58.24
Type
Switch
Housing
Split-Core
Range (AC)
2.5–135 A
Output
N.O. 1A @ 30VAC/DC
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H921Low Stock (4)
H921
USD $72.00
Type
Transducer
Housing
Split-Core
Range (AC)
0–30 / 60 / 120 A
Output
4–20 mA
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H922Low Stock (4)
H922
USD $54.60
Type
Transducer
Housing
Split-Core
Range (AC)
0–30 / 60 / 120 A
Output
0–5 VDC
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H923Low Stock (4)
H923
USD $65.70
Type
Transducer
Housing
Split-Core
Range (AC)
0–30 / 60 / 120 A
Output
0–10 VDC
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H958Low Stock (4)
H958
USD $77.67
Type
Switch/Relay
Housing
Split-Core
Range (AC)
2.5–135 A
Output
N.O. SPST, 12VDC Coil
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Frequently Asked Questions

What is the difference between a current transducer and a current switch?
A current transducer (H921/H922/H923) outputs an analog signal (4–20 mA or 0–10 VDC) proportional to the measured current — useful for monitoring load levels. A current switch (H308/H608/H908/H958) outputs a simple relay contact that opens or closes at a set trip point — used for proving fan or pump operation.
How do I select the right current switch for my application?
Consider the conductor size and current range first. The H308 suits micro split-core installations up to 50A, the H608 handles up to 175A with a status LED, and the H908/H958 are for larger split-core installations up to 135A. The H958 adds a relay coil output for applications needing both switch and relay action.
Can these current switches be used for fan proving in AHUs?
Yes. The H608 and H908 are commonly used for fan proving in air handling units. The adjustable trip point allows field calibration to the specific motor load.

Pressure Switches

Precision pressure-sensing switches for airflow monitoring and system protection in commercial HVAC applications. Ideal for filter status, duct pressure, and fan proving installations.

Filter StatusDuct PressureFan ProvingAirflow MonitoringSystem Protection
KEL-AFS-460-137Low Stock (4)
KEL-AFS-460-137
USD $183.89
Pressure Range
0.40–12" WC
Contact Type
DPDT
Voltage
24 VAC
Reset
Manual
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TEST-PRODUCT-001In Stock (98)
USD $1.00
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Frequently Asked Questions

What does a differential pressure switch do in an HVAC system?
It monitors the pressure difference across two points — typically across a filter or fan — and triggers a relay contact when that difference exceeds a set threshold. Common uses include filter change alerts, fan proving, and duct static pressure protection.
What does DPDT mean on the KEL-AFS-460-137?
DPDT stands for Double Pole Double Throw. It provides two independent switch contacts that change state simultaneously, giving more wiring flexibility for control or alarm circuits.
Why does this pressure switch require manual reset?
Manual reset ensures an operator physically acknowledges and clears the fault condition before the system restarts. This is standard practice for safety-critical airflow proving applications where automatic restart could mask an unresolved issue.

Living Space Sensors

Room-level environmental monitoring for temperature, humidity, and CO2. Designed for occupied spaces with sleek, unobtrusive aesthetics.

Commercial OfficesSchoolsHospitalsHotelsRetail SpacesBACnet & ModbusCO2 Detection
SLASXX2Low Stock (2)
SLASXX2
USD $160.04
Type
Humidity & Temperature Sensor
Measurements
Temperature, Humidity
Protocol / Output
Analog 0–10V / 0–5V
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SLASXXXLow Stock (4)
SLASXXX
USD $27.15
Type
Temperature Sensor
Measurements
Temperature
Protocol / Output
10K T3 Thermistor
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SLP-SeriesOut of Stock
SLP-Series
Type
Air Quality Sensor
Measurements
Temperature, Humidity, CO2, VOC, PM (configuration dependent)
Protocol / Output
BACnet MS/TP, Modbus RTU
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Frequently Asked Questions

What is the difference between SLASXX2 and SLASXXX?
The SLASXX2 measures temperature and humidity. The SLASXXX adds CO2 sensing for demand-controlled ventilation and indoor air quality monitoring.
What communication protocols do SLP Series sensors support?
BACnet MS/TP, Modbus RTU, and analog outputs (0-10V, 4-20mA) for integration with most building automation systems.
Can I get a specific SLP variant not listed here?
Yes. As an authorized distributor we can source any SLP configuration. Submit a quote request with your part number or specs.

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We can source any Schneider Electric sensor. Submit a quote request with your part number.

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