MTL4561 – MTL5561 FIRE AND SMOKE DETECTOR INTERFACE 2-channel The MTLx561 is a loop-powered 2–channel interface for use with conventional fire and smoke detectors located in hazardous areas. In operation, the triggering of a detector causes a corresponding change in the safe–area current. The unit features reverse input polarity protection.
MTL4561 safe isolator product specification
The MTL4500 range is the latest generation of backplane mounting products, building upon the heritage of MTL4000 and introducing many key application benefits.
See also common specification
Number of channels
Two, fully floating, loop powered
Location of fire and smoke detectors
Zone 0, IIC, T4–6 hazardous area if suitably certified
Div. 1, Group A, hazardous area
Input voltage
6 to 30V dc
Current range
1 to 40mA, nominal
Quiescent safe–area current at 20°C
(hazardous–area terminals open circuit)
< 400µA at Vin = 24V per channel
Integral input polarity protection
Input circuit protected against reverse polarity
Minimum output voltage Vout at 20°C
For Vin ≤ 25V: Vout = Vin – (0.38 x current in mA) – 2V
For Vin > 25V: Vout = 22.5V – (0.35 x current in mA)
Maximum output voltage
28V from 300Ω
Transfer accuracy at 20°C
Better than 400µA
Temperature drift
< 4µA/°C ( 0°C to 60°C)
< 15µA/°C (–20°C to 0°C)
Response time to step input
Settles to within 5% of final value within 1.5ms
Power dissipation within unit
0.7W maximum at 24V with 40mA signal (each channel)
0.9W maximum at 30V with 40mA signal (each channel)
Safety description for each channel
Uo=28V Io=93mA Po=0.65W Um = 253V rms or dc
Other selection models for MTL4500 series as below:
MTL4501-SR
MTL4504
MTL4510
MTL4510B
MTL4511
MTL4513
MTL4514D
MTL4514_B
MTL4516
MTL4516C
MTL4517
MTL4521
MTL4521L
MTL4523
MTL4523L
MTL4523R
MTL4523V-VL
MTL4524
MTL4524S
MTL4525
MTL4526
MTL4541
MTL4541A
MTL4541AS
MTL4541B
MTL4541P
MTL4541S
MTL4541T
MTL4544
MTL4544A
MTL4544AS
MTL4544B
MTL4544D
MTL4544S
MTL4546
MTL4546C
MTL4546S
MTL4546Y
MTL4549
MTL4549C
MTL4549Y
MTL4573
MTL4575
MTL4576-RTD
MTL4576-THC
MTL4581
MTL4582B
MTL4531
MTL4532
MTL4561
MTL4599
MTL4599N
For more information about MTL4561 safe isolators, please feel free to contact me here.
Contact details
HONGKONG XIEYUAN TECH CO., LIMITED
Telephone:86-027-85880977
Mobile :86-13545206420(Whatapp&Wechat is available)
Fax:86-027-85309780
Skype:Diana@hkxytech.com
E-mail:Diana@hkxytech.com Or Cc:Dianatian118@gmail.com
Website:www.hkxy-lowvoltage.com
