Series 65 Heat Detector

Description

Key Features

• Ideal for environments that are dirty or smoky under normal circumstances
• Suitable where smoke detectors are unsuitable
• Wide operating voltage: 9 V to 33 V DC

Product Information

Supply wiring	Two-wire monitored supply, polarity insensitive
Terminal functions	L1 IN & L2 IN; L1 OUT & L2 OUT; –R remote indicator negative connection
Supply voltage	9 V to 33 V DC
Ripple voltage	2 V peak-to-peak max at 0.1 Hz to 100 kHz
Alarm voltage	6 V to 28 V DC
Alarm indicator	Red light emitting diode
Design alarm load	420 Ω in series with a 2 V drop
Holding voltage / current	6 V / 10 mA
Remote output (–R)	Current sink to negative line, limited to 17 mA
Storage temperature	–30 °C to +80 °C
Operating temperature	A1R: –20 °C to +50 °C; BR: –20 °C to +65 °C; CS/CR: –20 °C to +80 °C
Humidity	0 % to 95 % RH (no condensation or icing)
IP rating	IP54
Dimensions	Ø 100 mm × H 42 mm
Weight	80 g
Materials	Housing: white flame-retardant polycarbonate; Terminals: nickel-plated stainless steel

Current Characteristics

Supply Voltage (V)	Quiescent (A1R Std)	Alarm (A1R Std)	Quiescent (A1R LED)	Alarm (A1R LED)	Quiescent (A1R LED/Mag)	Alarm (A1R LED/Mag)
24	45 µA	52 mA	55 µA	52 mA	55 µA	52 mA
9	40 µA	17 mA	50 µA	17 mA	50 µA	17 mA

Variants & Part Numbers

Class	Max Application Temp (°C)	Max Static Response Temp (°C)	Part No. Standard	Part No. Flashing LED
A1R	50	65	55000-122	55000-121
BR	65	85	55000-127	55000-126
CR	80	100	55000-132	55000-131
CS	80	100	55000-137	55000-136

Operation

In the A1R, BR and CR variants, paired NTC thermistors (one exposed, one insulated) sit on the PCB. Under stable conditions they have equal resistance; a rapid temperature rise causes the exposed thermistor’s resistance to drop relative to the insulated one. When the ratio exceeds a factory preset threshold, the detector alarms. CS variants use a single NTC thermistor network to provide a voltage output proportional to ambient temperature.

Compliance & Certification

• EMC Directive 2014/30/EU
• Construction Products Regulation (EU) 305/2011
• CPR, LPCB, VdS, VNIIPO, SBSC, FG & BOMBA approvals*
• ISO 9001:2015 & ISO 14001:2015 certified (LPCB ref. 010)

*Not all detectors carry every approval; see product pages for details.