Description
The Johnson Controls M9304-AGC-1N is a direct-mount electric damper actuator from the Johnson Controls M9300 family, configured for on/off and floating point control with two integral auxiliary switches.
Please talk to us before ordering this one - both the model and the tail are unaccounted for. We would rather say so plainly than publish specifications we cannot stand behind.
* The model. Johnson Controls' M9300 Series Electric Non-Spring Return Actuators product bulletin covers the M9308 (70 lb·in / 8 N·m) and M9310 (90 lb·in / 10 N·m) models, and its selection chart lists just four codes: M9308-AGA-2Z, M9308-AUA-2Z, M9310-AUA-2 and M9310-HGA-2. There is no M9304 in that bulletin.
* The tail. The catalogued M9300 codes end -2 or -2Z. This item ends -1N, which does not appear there either.
What the letters do reliably carry. Across Johnson Controls' actuator ranges a leading A denotes on/off and floating point control - driven by switched contacts, one input opening, the other closing, neither holding position - and a trailing C denotes two integral auxiliary switches. Both letter positions are consistent across every series in this catalogue, so the control type and the presence of two switches are the parts of this code we are confident about.
The switches. Johnson Controls describes the auxiliary switches on the M9300 family as a "line voltage auxiliary switch kit" that can "indicate an end-stop position or perform switching functions within the selected rotation range", with the two-switch version rated 3 A (0.5 A) at AC 240 V. If this unit follows the family, expect contacts of that order - but as the model is not catalogued we would confirm the rating from the plate before you design them into an interlock.
Worth knowing about the M9300 family: the auxiliary switches on those actuators are supplied as a field-installable external kit (M9300-1 for one switch, M9300-2 for two) rather than being built in at the factory. So a C in this position may indicate a unit already fitted with that kit rather than a distinct factory model - another reason to read the label.
What we will not guess at. The torque is the important one. Johnson Controls' numbering usually encodes torque in the digits - M9308 is 70 lb·in, M9310 is 90 lb·in - which would suggest a smaller unit here, but that is pattern-matching on a part number rather than a published figure, and torque is exactly the specification you cannot get wrong when sizing a damper actuator. We are also not stating the supply voltage, run time or cable. Send us a photo of the nameplate and we will identify it properly.
One thing worth checking on the plate: whether it is spring return. The M9300 family is non-spring-return - those actuators hold their last position when power is lost rather than driving to a fail-safe position, the opposite of the M9203 through M9220 spring-return ranges. If this actuator is intended for an outdoor air, freeze protection or smoke damper, that distinction is the safety function, not a feature. Confirm it before the unit goes on that duty.
A tail like this is often a real variant rather than a typo. The -1N suffix has form in this catalogue: an M9116-GGC-1N turned out to be a genuine Johnson Controls code carried on the manufacturer's own Virtual Branch listing, not a keying error. Read the label - if it names a damper or equipment manufacturer, that is very likely the explanation. We also hold the switchless M9304-AGA-1N, so this appears to be a pair rather than a one-off.
* Brand / Manufacturer: Johnson Controls
* Model / Part Number: M9304-AGC-1N
* Control: On/off and floating point
* Auxiliary switches: Two
* Torque: Please confirm - see note above
* Supply voltage: Please confirm
* Spring return: Please confirm - the M9300 family is non-spring-return
* Condition: New
We stock the Johnson Controls electric actuator ranges from 18 to 177 lb·in, spring return and non-spring return. Tell us what the label says, or the damper and torque you need, and we will match it.
Johnson Controls / Johnson Controls
M9304-AGC-1N / M9304AGC1N
M9304-AGC-1N / M9304AGC1N
Warranty Information
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