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

Fantini Cosmi ON/OFF thermostat 1 output L03BI1A 12VAC/DC - Switches & Thermostats
Fantini CosmiSwitches & Thermostats

Fantini Cosmi ON/OFF thermostat 1 output L03BI1A 12VAC/DC

Fantini Cosmi L03BI1A is an ON/OFF thermostat with single output for HVAC and process control applications. Operating on 12VAC/DC supply, it delivers ±0.3°C probe accuracy across -40 to 105°C measuring range with…

SKU 3G-CBM-03651

Also listed as: FAN 24028 · FAN-24028

Brand
Fantini Cosmi
Item
ON/OFF thermostat 1 output L03BI1A 12VAC/DC
Category
Switches & Thermostats
UNSPSC
39122229 — Temperature switch
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
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

Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Fantini Cosmi
resolution
0.1°C (-19.9-99.9), 1°C
num outputs
1
power supply
12Vac/dc
probe accuracy
<±0.3°C (-40-100), ±1°C
measuring range
-40 to 105°C
protection class
IP40

Datasheet Content

L03B.. ON/OFF - P.I.D. thermostats with 1 or 2 outputs with temperature alarm management For 1- or 2-outlet heating or cooling systems with 1 probe. 61 71 Dimensions (mm) 98 Sensor Pwr. Num Measuring Resolution Probe accuracy Degree of Supply outputs range protection °C °C 1 NTC 10K* probe LS130 L03BI1A included 12Vac/dc 1 -40 - 105 0.1(-19.9-99.9), 1 <±0.3°C(-40-100), ±1°C IP40 (back panel) 1 NTC 10K* probe LS130 L03BI2A included 2 -40 - 105 0.1(-19.9-99.9), 1 <±0.3°C(-40-100), ±1°C IP40 (back panel) 1 NTC 10K* probe LS130 L03BM1B included 230V~ 1 -40 - 105 0.1(-19.9-99.9), 1 <±0.3°C(-50-150), ±1°C IP40 (back panel) 1 NTC 10K* probe LS130 L03BM2B included 2 -40 - 105 0.1(-19.9-99.9), 1 <±0.3°C(-50-150), ±1°C IP40 (back panel) * A PTC1000 (LS120, not included) can also be connected instead of the NTC10K ELECTRICAL CHARACTERISTICS Output on single-pole relay in deviation. Contact rating 16(4)A 240 Va.c. for each output (L03BI1A-L03BI2A). Contact rating 12(3.6)A 240 Va.c. for each output (L03BM1B-L03BM2B). Power consumption 3W. REGULATIONS AND APPROVALS Compliant with EN60730-1; EN60730-2-9; EN55022 (Class B); EN50082-1. INSTALLATION DIN rail mounting. OPERATION Type of control: can operate in ON/OFF or PID mode. Temperature alarm management for output 2 (models L03BI2A and L03BM2B only).). ON/OFF control: in ON/OFF mode, the output is ON or OFF depending on the input temperature, setpoint (1SP) and hysteresis value (1HY). Hysteresis indicates the magnitude of the setpoint temperature deviation to reactivate the output. PID control: in PID mode the output is ON for a fraction of cycle time 1CT. The cycle time characterises the dynamics of the system to be controlled and influences the accuracy of the control. Proportional control. Integrative proportional control. 10 HEATING ON/OFF CONTROL ON/OFF CONTROL IN COOLING The heating output switches off when the The heating output switches on when the temperature is above the setpoint temperature is above the setpoint TEMPERATURE TEMPERATURE SP SP HY The output is ON when the The output is temperature is OFF when the below the setpoint temperature OUTPUT OUTPUT + hysteresis is below the setpoint + hysteresis TIME TIME PROPORTIONAL CONTROL (P) PROPORTIONAL-INTEGRATIVE CONTROL (PI) IN HEATING IN HEATING Overshoot Overshoot steady-state error SP SP TEMPERATURE TEMPERATURE proportional band integral control proportional band band process process temperature temperature TIME TIME PROPORTIONAL-INTEGRATIVE-DERIVATIVE (PID) HEATING CONTROL Overshoot L SP TEMPERATURE proportional band process temperature TIME FEATURES NTC10k inputs. Configurable parameters: „ cooling or heating function by assigning positive or negative sign to the differential or proportional band respectively; „ minimum or maximum setpoint limits; „ ON or OFF status of the output in the event of a defective probe; „ minimum ON/ OFF time of the output independent of the temperature value „ absolute or relative temperature alarms of output 2 (models with two outputs only). Operating temperature -10 to 50°C. Degree of frontal protection IP40 if correctly installed on back of panel. ON/OFF button on the front. ACCESSORIES LS130 LT312U NTC10k probe, Transformer scale range from -40 to 105°C, 230/12V 50-60Hz 3VA 2 wires 11

Technical Documents

(1)
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

Fantini Cosmi Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

Fantini Cosmi L03BI1A is an ON/OFF thermostat with single output for HVAC and process control applications. Operating on 12VAC/DC supply, it delivers ±0.3°C probe accuracy across -40 to 105°C measuring range with 0.1°C resolution. Ideal for industrial temperature regulation requiring compact, IP40-rated switching control.

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

Where can I source the Fantini Cosmi L03BI1A thermostat in the Philippines?

3G Electric Philippines supplies the Fantini Cosmi L03BI1A ON/OFF thermostat with delivery to Manila, Quezon City, and across the Philippines. We handle Bureau of Customs documentation and provide PHP invoicing. Lead time and availability upon request.

What is the lead time for the Fantini Cosmi L03BI1A thermostat?

Lead time varies based on current supply. Contact 3G Electric Philippines for availability and expected delivery schedule. We manage all logistics and customs clearance for shipments to the Philippines.

What temperature range and accuracy does the L03BI1A thermostat support?

The Fantini Cosmi L03BI1A operates from -40 to 105°C with ±0.3°C probe accuracy and 0.1°C resolution. It runs on 12VAC/DC supply with single ON/OFF output, ideal for HVAC and industrial process control applications requiring compact, IP40-rated equipment.

Used in

Common applications for Fantini Cosmi
Oil-fired boiler burner control — Fantini Cosmi ambient thermostat C16I and pressure switch B12HNY for fuel-pump lockout and room-temperature feedback.
Pneumatic compressor load management — B12DN or B13CN pressure switch for unload-valve control and tank cutout in 5–150 bar air systems.
Hydronic heating-plant commissioning — B12GNY and B12CRNY switches for pump-discharge and low-pressure monitoring in chilled-water and hot-water loops.
Industrial steam and hot-water vessel safety — B12HNY high-pressure switch and A96D/A95B level regulators for water-level and overpressure interlocks.
Thermal-storage tank management — A95B and A96D liquid-level regulators with 15-meter cable reach for boiler-makeup and expansion-tank applications.
Portable pump and pressure-test equipment — B12DN with adjustable differential for mobile hydraulic-circuit monitoring and component proof-pressure validation.

Fantini Cosmi Products

3G Electric supplies Fantini Cosmi switches & thermostats. 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

Compatible alternatives & equivalents

Cross-referenced by specification & description
ON/OFF thermostat 2 outputs L03BI2A 12VAC/DC
Fantini Cosmi
ON/OFF thermostat 2 outputs L03BI2A 12VAC/DC
ON/OFF thermostat 1 output L02BI1A 12VAC/DC
Fantini Cosmi
ON/OFF thermostat 1 output L02BI1A 12VAC/DC
ON/OFF thermostat 1 outlet L02CI1B 12VAC/DC
Fantini Cosmi
ON/OFF thermostat 1 outlet L02CI1B 12VAC/DC
ON/OFF thermostat 1 outlet L02DI1B 12VAC/DC
Fantini Cosmi
ON/OFF thermostat 1 outlet L02DI1B 12VAC/DC
ON/OFF thermostat 1 output L02BM1A 230V
Fantini Cosmi
ON/OFF thermostat 1 output L02BM1A 230V
ON/OFF thermostat 1 output L02CM1 115/230V
Fantini Cosmi
ON/OFF thermostat 1 output L02CM1 115/230V

More from Fantini Cosmi

View all Fantini Cosmi parts
Ambient thermostat CH115RF white
Fantini Cosmi
Ambient thermostat CH115RF white
Fantini Cosmi
Fantini Cosmi
Immersion aquastat external adjustment 10/90°C C03A3
Fantini Cosmi
Fantini Cosmi
Branching box KBE3
Fantini Cosmi
Fantini Cosmi
Room thermostat CH111 silver
Fantini Cosmi
Fantini Cosmi
Daily program C58C silver
Fantini Cosmi
Fantini Cosmi
Immersion aquastat fixed setting 100°C C06A3M
Fantini Cosmi
Fantini Cosmi
Immersion aquastat external adjustment 40/120°C C03B3
Fantini Cosmi
Fantini Cosmi
Spacing bar, 1m, PVC KJSSP