Product Overview

M9203-xxx-2(Z) Series Electric Spring Return Actuators Product Bulletin 13
M9203-Bxx-2(Z) Series On/Off Electric Spring Return Actuators (Part 1 of 2)
Power
Requirements
-BGx-2 Models AC 24 V (AC 19.2 V to 28.8 V) at 50/60 Hz: Class 2 (North America) or Safety
Extra-Low Voltage (SELV) (Europe), 5 VA Running, 1.6 VA Holding Position
DC 24 V (DC 21.6 V to 28.8 V): Class 2 (North America) or SELV (Europe),
2.8 W Running, 0.8 W Holding Position
Minimum Transformer Size: 6 VA per Actuator
-BUx-2 Models AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.06 A Running, 0.02 A
Holding Position
-BUx-2Z Models AC 100 to 240 V (AC 85 V to 264 V) at 50/60 Hz: 0.08 A Running, 0.02 A
Holding Position
Auxiliary Switch
Rating
-xxB Models One Single-Pole, Double-Throw (SPDT), Double-Insulated Switch with Silver
Contacts:
AC 24 V, 50 VA Pilot Duty
AC 120 V, 5.8 A Resistive, 1/4 hp, 275 VA Pilot Duty
AC 240 V, 5.0 A Resistive, 1/4 hp, 275 VA Pilot Duty
Spring Return Direction Is Selectable with Mounting Position of Actuator:
Actuator Side A Is Away from Damper or Valve: CCW Spring Return
Actuator Side B Is Away from Damper or Valve: CW Spring Return
Rated Torque Power On
(Running)
27 lb·in. (3 N·m) All Operating Temperatures
Power Off
(Spring Returning)
27 lb·in. (3 N·m) All Operating Temperatures
Rotation Range Maximum Full Stroke: 95°
Adjustable Stop: 35 to 95° Maximum Position
Rotation Time
for 90 Degrees of
Travel
Power On
(Running)
-Bxx-2 Models
53 to 71 Seconds for 0 to 27 lb·in. (3 N·m) Load, at Room Temperature
60 Seconds Nominal at Full Rated Load (0.25 rpm)
Power On
(Running)
-BUx-2Z Models
24 to 28 Seconds for 0 to 27 lb·in. (3 N·m) Load, at Room Temperature
27 Seconds Nominal at Full Rated Load (0.5 rpm)
Power Off
(Spring Returning)
19 to 23 Seconds for 0 to 27 lb·in. (3 N·m) Load, at Room Temperature
22 Seconds Nominal at Full Rated Load
28 Seconds Maximum with 27 lb·in. (3 N·m) Load at -22°F (-30°C)
Life Cycles 60,000 Full-Stroke Cycles with 27 lb·in. (3 N·m) Load
Audible Noise
Rating
Power On
(Running)
-Bxx-2 Models
<36 dBA at 27 lb·in. (3 N·m) Load, at a Distance of 39-13/32 in. (1 m)
Power On
(Running)
-BUx-2Z Models
<45 dBA at 27 lb·in. (3 N·m) Load, at a Distance of 39-13/32 in. (1 m)
Power On
(Holding)
<20 dBA at a Distance of 39-13/32 in. (1 m)
Power Off
(Spring Returning)
<51 dBA at 27 lb·in. (3 N·m) Load, at a Distance of 39-13/32 in. (1 m)
Electrical
Connections
Actuator
(All Models)
48 in. (1.2 m) UL 758 Type AWM Halogen-Free Cable with 18 AWG
(0.85 mm²) Conductors and 0.25 in. (6 mm) Ferrule Ends
Auxiliary Switch
(-xxB Models)
48 in. (1.2 m) UL 758 Type AWM Halogen-Free Cable with 18 AWG
(0.85 mm²) Conductors and 0.25 in. (6 mm) Ferrule Ends
Conduit Connections Integral 1/2 in. (13 mm) Threaded Conduit Connector(s)
Mechanical
Connections
Round Shafts Range of Sizes: 1/4 to 1/2 in. (6 to 12 mm)
Square Shafts Range of Sizes: 1/4 to 5/16 in. (6 to 8 mm)