10Nm NFA... Mechanical Fail-Safe Damper Actuator

Mechanical Fail-Safe Damper Actuator NFA

Spring return actuator with emergency function for
adjusting air dampers in ventilation and air conditioning
systems in buildings
• Torque 10Nm
• Nominal voltage AC 24...240V / DC 24...125V
• Control: Open-close

Mechanical Fail-Safe Damper Actuators Product Overview
	10Nm                            20Nm		30Nm
	NFA..	SFA..	EF..
Open/Close
AC 24...240V / DC 24...125V	NFA	SFA	-
Auxiliary switch built-in 2 SPDT	NFA-S2	SFA-S2	-
AC/DC 24V  50/60Hz
Auxiliary switch built-in 2 SPDT	-	-	EF24A-S2
AC 230V 50/60Hz
Auxiliary switch built-in 2 SPDT	-	-	EF230A-S2
Modulating
Control signal DC (0)2...10V, feedback DC 2...10V AC/DC 24V  50/60Hz
NF24A-SR                     SF24A-SR                                       EF24A-SR
Running time                    -Motor
-Spring return
Open/Close 75s; modulating 150s
20s @ –20 ...+50°C / max. 60s @ –30°C
Open/Close 75s; modulating 150s
20s @ –20 ...+50°C / max. 60s @ –30°C
Shaft diameter                                                                           10...25.4mm / 14...25.4mm                                12...26.7mm / 12...25.2mm
Sound power level            -Motor
-Spring return
Open/Close max. 45dB(A)
Modulating max. 40dB(A) max. 62dB(A)
Open/Close max. 55dB(A)
Modulating max. 45dB(A) max. 71dB(A)
Electrical connection                                                                                                                     Cable 1m
Direction of rotation                                                                                                          Selected by mounting L/R
Angle of rotation                                                                                                                            Max. 95°
Mechanical end stops                                                                                                                        Yes
Position indicator                                                                                                                               Yes
Degree of protection                                                                                                                         IP54
EMC                                                                                                                              CE according to 2004/108/EC
LVD*                                                                                                                               CE according to 2006/95/EC
Ambient temperature                                                                                                                   -30...+50°C
Non-operation temperature                                                                                                         -40...+80°C
Humidity                                                                                                                         5...95% RH, non-condensing
* For 230V only.

Mechanical Fail-Safe Damper Actuator NF24A-SR
Modulating spring return actuator with emergency function for
adjusting air dampers in ventilation and air conditioning systems
in buildings
• Torque 10Nm
• Nominal voltage AC/DC 24V
• Control: modulating DC 0...10V
• Position feedback DC 2...10V