7
AB-7521
 
z
Common specications
Item Specication
Power supply 24 V AC, -15/+10 %  (50/60 Hz)
24 V DC ±10 %
Power consumption 24 V AC: 1.0 VA max.
24 V DC: 200 mW max.
Insulation resistance 500 V DC,  20 MΩ min.  (between case and terminals)
Withstand voltage When applying 500 V AC for 1 min, leakage current: 1 mA max. 
(between case and terminals)
Environmental 
conditions
Rated operating 
conditions
Marginal operating 
conditions
Transportation/
storage conditions
When 
measuring 
temperature
Ambient 
temperature
0–50 °C 0–60 °C -20–70 °C
Ambient 
humidity
0–100 % RH  (without condensation) 5–95 % RH  (without 
condensation)  
(60 °Ctd or less)
When 
measuring 
humidity
Ambient 
temperature
15–35 °C 0–60 °C -20–70 °C
Ambient 
humidity
20–80 % RH  
(without 
condensation)
0–100 % RH  
(without 
condensation)
5–95 % RH  (without 
condensation)  
(60 °Ctd or less)
Vibration 1.96 m/s² max.  (10–150 Hz) 9.8 m/s² max. 
(10–150 Hz)
Air velocity 0.1–0.5 m/s 0–5 m/s -
Color Cover, base Pale gray  (BN-85, Japan Paint Manufacturers Association in 
2003)
Main materials Cover, base PC resin
Weight Approx. 110 g
Connection Lead wire  (0.75 mm
2
, length 300 mm)