Product Overview

Control Signal
Proportional 2 to 10 VDC (MEP-4xx2)
Tri-state/2-Pos. See Supply Voltage
Two-position See Supply Voltage
Supply Voltage
Low Voltage 24 VDC/VAC (+20%/–15%),
Class 2 only (MEP-4xx1/
4xx2/4xx4)
Line Voltage 100–240 VAC (MEP-4xx5)
Supply Frequency 50/60 Hz for VAC operation
Supply Power 6 VA normal operation, 19 VA
peak initializing
Transformer Sizing 20 VA
Initialization Time 30 seconds (on power-up) for
proportional models only
Feedback Output 1 to 5 VDC or 2 to 10 VDC
(switch selectable, proportion-
al models only)
Auxiliary Switches
Rating SPDT 6 A resistive load (3 A
motor load) @ 250 VAC
MEP-427x/457x 1 switch, adjustable 0 to 90°
MEP-497x 2 switches; 1 adjustable 0 to
90° and 1 xed at 10° from full
CW direction
Fail-Safe Control Switch selectable, CW/OFF/
CCW on proportional and
tri-state models, CW/CCW on
2-position models
Fail-Safe Type (Electronic) capacitor driven
Angular Rotation 0 to 95°, fully adjustable with
mechanical stop
Running Time See Models on page 2
Torque
MEP-42xx 25 in-lbs. (2.82 N•m)
MEP-45xx 45 in-lbs. (5 N•m)
MEP-49xx 90 in-lbs. (10 N•m)
Noise Level < 45 dBA max. at 1 meter
Mounting Direct to 1/4 to 5/8 inches (6 to
16 mm) round or 1/4 to 7/16
inches (6 to 11 mm) square
shaft by adjustable “V” bolt
and supplied non-rotation
bracket; minimum recom-
mended damper shaft length
is 1-5/8 inches
Specifications
Brackets Non-rotation bracket HMO-
4001 (supplied with MEP-4x7x
and all MEP-49xx models) or
HMO-4002 (supplied with
MEP-425x and MEP-455x);
HPO-5073 or HPO-5074 re-
quired for mounting to valves
Connections
Power/Signal Fixed wire clamp type termi-
nal block, 12–26 AWG, copper,
or prewired 3-foot, 18 AWG
cable (see Models on page
2)
Aux. Switch(es) 3-foot 18 AWG cable
Dimensions 6.000 x 2.812 x 3.406 inches
(152.4 x 71.4 x 86.5 mm)—see
also Dimensions on page 4
Weight 1.5 lb. (0.68 kg)
Enclosure UL94-5VA Flame-retardant
plastic
Position Indication Visual indicator, 0° to 95°
Servicing Maintenance free
Quality Standard ISO 9001
Warranty 5 years (from mfg. date code)
Approvals UL 873 Temperature Indicating
and Regulating Equipment;
FCC Class B, Part 15, Subpart
B and complies w ith Canadian
ICES-003 Class B (except for
MEP-4xx4 models, which are
Class A);
SASO PCP Registration KSA
R-103260
Environmental Limits
Operating –22 to 131° F (–30 to 55° C)
Shipping –40 to 176° F (–40 to 80° C)
Humidity 5 to 95% RH (non-condensing)
NOTE: See also Dimensions on page 4.