120V 270# 2POS S/R AUX NEMA 4| Actuator Type | Spring return |
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| Control Type | Open-close only |
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| Electrical Connection | terminals |
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| Voltage | AC 100...240�V / DC 100...125�V |
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| Direction of Rotation (Fail-Safe) | reversible with CW/CCW mounting |
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| Direction of Rotation (Motor) | reversible with CW/CCW mounting |
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| Power Consumption (Holding) | 4.5�W |
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| Power Consumption (Running) | 9.5 W |
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| Degree of Protection | NEMA 4, UL Enclosure Type 4 |
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| Shaft Diameter | 1/2" to 1.05" round, centers on 3/4" with insert, 1.05" without insert |
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| Manual Override | 5 mm hex crank (3/16" Allen), supplied |
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| Application | For On/Off, fail-safe control of dampers in HVAC systems. Actuator sizing
should be done in accordance with the damper manufacturer?s specifications.
Control is On/Off from an auxiliary contact or a manual switch. The actuator
is mounted directly to a damper shaft up to 1.05? in diameter by means of its
universal clamp. A crank arm and several mounting brackets are available for
applications where the actuator cannot be direct coupled to the damper shaft.
Maximum of two EF?s can be piggybacked for torque loads of up to 540 in-lbs.
Minimum 3/4? diameter shaft and parallel wiring. |
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| Servicing | maintenance free |
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| Power Supply | 100...240 VAC +10% / -20%, 50/60 Hz,
100?125 VDC � 10% |
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| Power Consumption Running | 9.5 W |
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| Power Consumption Holding | 4.5 W |
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| Transformer Sizing | 21 VA @ 100 VAC, 29 VA @ 240 VAC |
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| Electrical Connection | terminal block(s) inside junction box with
knockouts |
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| Overload Protection | electronic throughout 0� to 95� rotation |
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| Angle of Rotation | max. 95� (adjustable with mechanical end
stop, 35� to 95� |
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| Direction of Rotation (Motor) | reversible with CW/CCW mounting |
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| Manual Override | 5 mm hex crank (3/16? Allen), supplied |
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| Running Time (Motor) | 75 sec |
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| Ambient Temperature Range | -22�F to +122�F [-30�C to +50�C] |
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| Storage Temperature Range | -40�F to +176�F [-40�C to +80�C] |
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| Housing | NEMA 4, IP66, UL enclosure type 4 |
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| Agency Listings | cULus acc. to UL60730-1A/-2-14, CAN/CSA
E60730-1:02, CE acc. to 2004/108/EC and
2006/95/EC |
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| Noise Level (Motor) | �56.5 dB (A) |
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| Direction of Rotation (Fail-Safe | reversible with CW/CCW mounting |
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| Position Indication | visual indicator, 0� to 95� (0� is full spring
return position) |
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| Running Time (Fail-Safe) | <20 sec @ -4�F to 122�F [-20�C to 50�C], <
60 sec @ -22�F [-30�C] |
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| Noise Level (Fail-Safe) | �71 dB (A) |
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| Housing Material | Aluminum die cast and plastic casing |
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| Electrical protection | actuators are double insulated |
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| Auxiliary Switch | 2 x SPDT 3A resistive (0.5A inductive) @ 250
VAC, one set at +10� and one set at 85� |
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| Shaft Diameter | 1/2? to 1.05? round, centers on 3/4? with
insert, 1.05? without insert |
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| Torque | 270 in-lbs [30 Nm] minimum |
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| ZG-100 | Univ. right angle bracket (17? H x 11-1/8? W x 6? base). |
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| ZG-DC1 | Damper clip for damper blade, 3.5? width. |
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| ZG-DC2 | Damper clip for damper blade, 6? width. |
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| AV8-25 | 9.8? shaft extension for 5/16? to 1? diameter shafts. |
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| PS-100 | Actuator power supply and control simulator |
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| EF-P | Anti-rotation bracket EFB(X)/GKB(X)/GMB(X). |
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| IND-EFB | EFB(X) position indicator. |
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| K9-2 | Standard EFB(X) clamp (1/2? to 1.05?). |
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| KG10A | Ball joint for 3/8? diameter rod, zinc plated. |
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| KH10 | Univ. crankarm, slot 21/64? w, for 9/16? to 1? dia. shafts. |
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| KH-EFB | EFB(X) crankarm (with 1.05? diameter shaft pass through). |
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| SH10 | Push rod for KG10A ball joint (36? L, 3/8? diameter). |
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| ZG-120 | Jackshaft mounting bracket. |
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| ZG-EFB | EFB(X) crankarm adaptor kit. |
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| ZG-JSA-3 | 1.05? diameter jackshaft adaptor (12? L). |
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| Operation | The EF..120-S N4 series actuators provide true spring return operation for
reliable fail-safe application and positive close off on air tight dampers. The
spring return system provides constant torque to the damper with, and without,
power applied to the actuator. The EF..120-S N4 series provides 95� of rotation
and is provided with a graduated position indicator showing 0� to 95�. The
actuator may be stalled anywhere in its normal rotation without the need of
mechanical end switches. The EF..120-S N4 versions are provided with two
built-in auxiliary switches. These SPDT switches provide safety interfacing or
signaling, for example, for fan start-up. The switching function at the fail-safe
position is fixed at 10�, the other switch function is fixed at 85�. The EF..120-S
N4 actuator is shipped at +5� (5� from full fail-safe) to provide automatic
compression against damper gaskets for tight shut-off.
Installation Note: Use 60�C/75�C copper (CU) conductor and wire size range
12-26 AWG, stranded or solid. If conduit is used, use flexible metal conduit;
UL listed and CSA certified strain relief or conduit fitting suitable for outdoor
applications, rated NEMA type 4, 4X, 6 or 6X or watertight |
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| Typical Specification | On/Off spring return damper actuators shall be direct coupled type which require no crank arm and linkage and be capable of direct mounting to a jackshaft up to a 1.05? diameter. The actuators must be designed so that they may be used for either clockwise or counter clockwise fail-safe operation. Actuators shall be protected from overload at all angles of rotation. If required, two SPDT auxiliary switch shall be provided. Actuators with auxiliary switches must be constructed to meet the requirements for Double Insulation so an electrical ground is not required to meet agency listings. Actuators shall be cULus listed and have a 5 year warranty, and be manufactured under ISO 9001 International Quality Control Standards. Actuators shall be as manufactured by Belimo |
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