We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

3G Electric
RFQ CartGet a QuoteSign inSign up
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V - Inline Thermal-Dispersion Flow Switches
GEMS SENSORSInline Thermal-Dispersion Flow Switches

GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V

The GEMS SENSORS Flow Switch is an inline thermal-dispersion flow switch with a fixed set point and SPST normally open switch position. It has a contact rating of 45 mA at 30V AC and 65 mA at 42V DC (MPN 230500-3-40).

SKU 3G-OTH-88128

Brand
GEMS SENSORS
Item
Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V
Category
Inline Thermal-Dispersion Flow Switches
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

GEMS SENSORS
Manufacturer Part Number
230500-3-40
Type
SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V
Switch Type
SPST
Set Point Type
Fixed
Switch Position
Normally Open
Contact Rating (AC)
45 mA @ 30V
Contact Rating (DC)
65 mA @ 42V
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

GEMS SENSORS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The GEMS SENSORS Flow Switch is an inline thermal-dispersion flow switch with a fixed set point and SPST normally open switch position. It has a contact rating of 45 mA at 30V AC and 65 mA at 42V DC (MPN 230500-3-40).

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a GEMS SENSORS thermal-dispersion flow switch used for?

This GEMS SENSORS flow switch detects liquid or gas flow in pipelines using thermal-dispersion technology. It is commonly used in industrial process control, HVAC, and water treatment systems to monitor flow presence and trigger alarms or shutdowns when flow stops.

What are the specifications of the GEMS SENSORS 230500-3-40 flow switch?

The GEMS SENSORS 230500-3-40 is an inline thermal-dispersion flow switch with a fixed set point. It features an SPST normally open switch, rated 45 mA at 30V AC and 65 mA at 42V DC. The switch position is normally open, and the set point is factory-fixed.

Where to buy GEMS SENSORS flow switches worldwide?

3G Electric supplies GEMS SENSORS flow switches worldwide. As a global industrial sourcing partner, we handle logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on the 230500-3-40 or other GEMS SENSORS models.

How to install a GEMS SENSORS thermal-dispersion flow switch?

Install the GEMS SENSORS flow switch in a straight pipe section with full liquid contact. Ensure proper electrical connections per the SPST normally open wiring diagram. Avoid overtightening the fitting. Always follow the manufacturer's installation manual for orientation and flow direction.

Used in

Common applications for GEMS SENSORS
Burner management — GEMS SENSORS FS-4 piston flow switch for monitoring cooling water flow in industrial burners
Pump protection — GEMS SENSORS FS-380 high-pressure flow switch to detect loss of flow in pump systems
Process control — GEMS SENSORS 230500 thermal-dispersion flow switch for low-flow detection in chemical processes
Cooling systems — GEMS SENSORS RFS flow sight with remote output for visual and electrical flow indication in heat exchangers
Water treatment — GEMS SENSORS FT-110 turbine flow sensor for measuring flow rates in filtration systems
Hydraulic systems — GEMS SENSORS FS-500 polypropylene piston flow switch for corrosive fluid monitoring in hydraulic circuits

GEMS SENSORS Products

3G Electric supplies GEMS SENSORS inline thermal-dispersion flow switches. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
GEMS SENSORS Liquid Flow Switch: Brass, 1 in FNPT, 1 in Connection Size, FNPT, -20°F – 212°F, SPDT (MPN RFS, 181688). Key specifications — Switch Type: SPDT; Switch Position: Normally Open; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: CE Certified; Wetted Material: Ceramic.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Brass, 1 in FNPT, 1 in Connection Size, FNPT, -20°F – 212°F, SPDT (MPN RFS, 181688). Key specifications — Switch Type: SPDT; Switch Position: Normally Open; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: CE Certified; Wetted Material: Ceramic.
GEMS SENSORS Liquid Flow Switch: Brass, 1/2 in FNPT, 1/2 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 156268). Key specifications — Switch Type: SPDT; Switch Position: Normally Closed; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Viton.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Brass, 1/2 in FNPT, 1/2 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 156268). Key specifications — Switch Type: SPDT; Switch Position: Normally Closed; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Viton.
GEMS SENSORS Liquid Flow Switch: Brass, 3/4 in FNPT, 3/4 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 180395). Key specifications — Switch Type: SPDT; Switch Position: Normally Closed; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Ceramic.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Brass, 3/4 in FNPT, 3/4 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 180395). Key specifications — Switch Type: SPDT; Switch Position: Normally Closed; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Ceramic.
GEMS SENSORS Liquid Flow Switch: Brass, 1/4 in FNPT, 1/4 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 156265). Key specifications — Switch Type: SPDT; Switch Position: Normally Open; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Viton.
GEMS SENSORS
GEMS SENSORS Liquid Flow Switch: Brass, 1/4 in FNPT, 1/4 in Connection Size, FNPT, -20°F – 212°F (MPN RFS, 156265). Key specifications — Switch Type: SPDT; Switch Position: Normally Open; Brand: GEMS SENSORS; Connection Type: FNPT; Standards: UL Listed; Wetted Material: Viton.

More from GEMS SENSORS

View all GEMS SENSORS parts →
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-3-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-3-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-1-20). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-1-20). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-1-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-1-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-4-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-4-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-5). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-3-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-3-60). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-20). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.
GEMS SENSORS
GEMS SENSORS Flow Switch: Thermal-Dispersion, SPST, Normally Open, Fixed, 45 mA @ 30V, 65 mA @ 42V (MPN 230500-2-20). Key specifications — Set Point Type: Fixed; Switch Position: Normally Open; Switch Type: SPST; Brand: GEMS SENSORS; Contact Rating (DC): 65 mA @ 42V; Contact Rating (AC): 45 mA @ 30V.