Industrial Relays: Building Automation

Reliable Relays for Modern Building Automation Systems

Relays are essential components in building automation, providing safe and efficient switching for HVAC, lighting, security, and energy-management systems. Our building automation relays are designed to offer long-lasting performance, stable operation, and seamless integration with today’s building technologies.

Engineered for Energy-Efficient Buildings

In building management systems, precise control is key to maintaining comfort, safety, and energy efficiency. Our relays allow controllers to manage a wide range of loads, from fans and pumps to lighting circuits and access control devices. With options for both electromechanical and solid-state designs, we provide flexible solutions for every automation requirement.

Key Features

• High switching reliability for AC and DC loads
• Low power consumption for energy-efficient operation
• Built-in isolation to protect control systems
• Long electrical and mechanical lifespan

Our relays support virtually all Building automation functions, including:

• HVAC control (heating, ventilation, air conditioning)
• Lighting and shading systems
• Access control and security systems
• Fire and safety monitoring
• Energy and load management

Whether controlling air-handling units, switching lighting circuits, or managing distributed building zones, our relays provide the dependable performance you need. From commercial buildings, offices and schools to hospitals and industrial facilities, our relays are built to handle demanding environments. They provide stable switching in applications with:

• Frequent cycling
• High inrush currents
• Temperature changes

This ensures consistent operation and minimal maintenance over the life of the system.

Key Features of FCL Components relays in Building Automation

FCL Components relays for building automation bring the following benefits:

• Low power consumption
• Compact dimensions
• High reliability

Comparison Tables

Power Relays (1)

Series	JS	FTR-MY	FTR-LY	NY
Contact Configuration	1 Form A, 1 Form C	1 Form A	1 Form A, 1 Form C	1 Form A
Contact rating (resistive)	8A, 250VAC/24VDC	5A, 250VAC/30VDC	6A, 250VAC/ 24VDC	5A, 250VAC/30VDC
Coil voltage	5-60VDC	4.5-24VDC	5-60VDC	4.5-24VDC
Max. carrying current	10A	5A	6A	5A
Max. inrush current	-	-	-	-
Max. switching voltage	400VAC/300VDC	277VAC/125VDC	250VAC	270VAC/125VDC
Max. switching power	2,000VA/192W	1,250VA/150W	1,500VA/144W	1,250VA/150W
Min. switching load (reference value)	100mA, 5VDC (gold flash) 10mA, 5VDC (gold plate)	1mA, 5VDC	Y, E: 100mA, 5VDC V (gold plate): 10mA, 5VDC	1mA, 5VDC
Power consumption	220 to 290mW	150mW	170 to 217mW	120mW
Insulation resistance	Min. 1,000MΩ	Min. 1,000MΩ	Min. 1,000MΩ	Min. 1,000MΩ
Dielectric strength (coil to contacts)	5,000VAC	3,000VAC	4,000VAC, 10mA detection current	3,000VAC
Surge voltage (coil to contacts)	10,000V	5,080V	6,000V	5,080V
Operating temperature	-40ºC - +85ºC	-40ºC - +90ºC	-40ºC - +85ºC	-40ºC - +90ºC
Operation Time	Max. 10ms	Max. 10ms	Max. 8ms	Max. 10ms
Release Time	Max. 5ms	Max. 5ms	Max. 4ms	Max. 5ms
Mechanical life	Min. 20x106	Min. 20x106	Min. 10x106	Min. 20x106
Sealing	Plastic sealed, RTIII	Plastic sealed, RTIII	Plastic sealed, RTIII	Plastic sealed, RTIII
Dimensions (W x L x H)	10.0 x 29.0 x 12.5 mm	5.0 x 20.0 x 12.0 mm	5.0 x 28.0 x 15.0 mm (straight) 15.0 x 28.0 x 5.0 mm (right angle)	5.0 x 20.1 x 17.5 mm

Power Relays (2)

Series	FTR-K1-KS	FTR-K1-HT	FTR-F1 (5A type)
Contact Configuration	1 Form A, 1 Form C	1 Form A, 1 Form C	2 Form A, 2 Form C
Contact rating	16A, 250VDC	16A, 250VAC/ 24VDC	5A, 250VAC/ 24VDC
Coil voltage	5-60VDC	5-60VDC	1.5-110VDC, (sensitive type: 1.5-48VDC)
Max. carrying current	20A	20A	7A
Max. inrush current	120A, 250VAC	78A, 250VAC	-
Max. switching voltage	440VAC	440VAC/300VDC	440VAC/300VDC
Max. switching power	4,000VA	4,000VA/384W	1,250VA/120W
Min. switching load	100mA, 5VDC	100mA, 5VDC	100mA, 5VDC
Power consumption	400-430mW	400-430mW	530mW to 550mW (standard type) 400mW (sensitive type)
Insulation resistance	Min. 1,000MΩ	Min. 1,000MΩ	Min. 1,000MΩ
Dielectric strength (coil to contacts)	5,000VAC	5,000VAC	5,000VAC
Surge voltage (coil to contacts)	10,000V	10,000V	10,000V
Operating temperature	-40ºC - +85ºC	-40ºC - +105ºC	-40ºC - +75ºC
Operation Time	15ms	15ms	15ms
Release Time	5ms	5ms	5ms
Mechanical life	Min. 20x106	Min. 20x106	Min. 20x106
Sealing	Flux proof, RTII	Flux proof, RTII	Plastic sealed, RTIII
Dimensions (W x L x H)	12.7 x 29.0 x 15.7 mm	12.7 x 29.0 x 15.7 mm	12.8 x 29.0 x 16.5 mm

Signal Relays

Series	FTR-B3/B4	FTR-C1	FTR-C2
Contact Configuration	2 Form C	2 Form C	2 Form C
Contact rating	1A, 30VDC/ 0.3A, 125VAC	0.3A, 125VAC/1A, 30VDC	0.3A, 125VAC/1A, 30VDC
Coil voltage	1.5-24VDC	3-24VDC	3-24VDC
Max. carrying current	2A	2A	2A
Max. switching voltage	250VAC/220VDC	250VAC/220VDC	250VAC/220VDC
Max. switching power	62.5VA/30W	62.5VA/30W	62.5VA/30W
Min. switching load (refernce value)	0.01mA, 10mVDC	0.01mA, 10mVDC	0.01mA, 10mVDC
Power consumption	FTR-B3: 140mW to 230mW (non-latching) A, 100mW to 120mW (latching) B FTR-B4: 140mW to 230mW (non-latching) A, 100mW to 130mW (latching) B	280mW to 300mW (non-latching) 140mW to 180mW (latching)	300mW (non-latching) 150mW (latching)
Insulation resistance	Min. 1,000MΩ	Min. 1,000MΩ	Min. 1,000MΩ
Dielectric strength (coil to contacts)	1,500VAC	3,000VAC	2,000VAC
Surge voltage (coil to contacts)	2,500V	5,000V	2,500V
Operating temperature	-40ºC - +85ºC	-40ºC - +85ºC	-40ºC - +85ºC
Operation Time	Max. 3ms	Max. 6ms	Max. 15ms
Release Time	Max. 3ms	Max. 6ms	Max. 15ms
Mechanical life	50x106()A, 20x106()B	Min. 10x106	Min. 10x106
Sealing	Plastic sealed, RTIII	Plastic sealed, RTIII	Plastic sealed, RTIII
Dimensions (W x L x H)	FTR-B3: 7.2 x 10.6 x 5.25 mm FTR-B4: 5.7 x 10.6 x 9.7 mm (SMT)	7.4 x 14.9 x 9.4mm (SMT)	9.85 x 20.05 x 11.7 mm (SMT)

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