C L A S S
ADJUSTABLE TRUE OFF DELAY RELAY
388
CLASS 388
TRUE OFF DELAY
DOES NOT REQUIRE CONTROL
POWER DURING TIMING CYCLE
± 3% REPEAT TIMING ACCURACY
FIELD ADJUSTABLE
UL Recognized
File No: E43641
COMPLIES WITH
REQUIREMENTS OF
* IEC STANDARDS
947-4-1 AND 947-5-1
LOW VOLTAGE DIRECTIVE.
*1EC = INTERNATIONAL
ELECTROTECHNICAL COMMISSION
* RELEVANT IEC CONTACT UTILIZATION CATEGORIES
AC-1, AC-3, DC-1, AC-15
(SEE SECTION 11 FOR RELEVANT UTILIZATION CATEGORIES.)
SPECIFICATIONS CLASS 388 TRUE OFF DELAY
TIMING
Operating Modes Available:
True Off Delay
Timing Adjustments Available:
Repeatability:
0.1 to 10 Seconds thru 0.5 to 5 Minutes
± 3% @ Nominal Voltage & 25˚C
100 mS Max.
The Class 388 Adjustable True Off Delay
Relay combines a Solid State Timing circuit
with a state of the art Magnetic Latching
relay. This combination allows the relay
to Pull-in when power is applied to the input.
Timing starts when power is removed from
the input and at the end of the preset timing
period the relay will dropout.
Reset time:
INPUT
Temperature Range Operate:
Temperature Range Storage:
Input Current:
- 10˚C to + 55˚C
- 40˚C to + 85˚C
10 mA @ 120VAC, 15 mA @ 24VDC fixed
CONTACTS
Contact Configuration:
Contact Rating:
DPDT (2 Form C)
12 Amps @ 120 VAC/28 VDC Resistive
WIRING DIAGRAM
Viewed from Pin End
1/3 HP, 120 VAC, 1/2 HP, 240 VAC
NEMA B300 Pilot Duty.
Contact Life:
100,000 Operations @ 120 VAC 12 Amps Resistive
Load.
1
4
2
5
3
6
1,000,000 Operations @ 120 VAC 5 Amps Resistive
Load
2,000,000 Operations @ 120 VAC 2 Amps Resistive
Load.
DIELECTRIC STRENGTH
Coil to Contacts:
7
9
8
2000 V rms
1000 V rms
2000 VAC for 50 Microseconds
(DC Models Only)
Across Open Contacts:
Transient:
B
A
Reverse Polarity Protection:
+
-
INPUT
MECHANICAL
Enclosure:
Mounting:
Terminals:
Weight:
Observe polarity on DC models
Polycarbonate dust cover
Square Base Plug-in
3/16" X .020" Quick Connect, P.C. Terminals Available
4 oz. 96 grams
OUTLINE DIMENSIONS
Dimensions are Shown In Inches and Millimeter
2.90 Max.
(73.8)
.312
(7.9)
1.53
(38.8)
.625
(15.8)
1
4
2
5
3
6
NOMINAL
INPUT
VOLTAGE
TIMING
RANGE
PART
NUMBERS
1.40
(35.7)
7
9
8
AC OPERATED
0.6 to 60 Seconds
0.1 to 10 Seconds
120 VAC
120 VAC
W388ACPSRX-29
W388ACPSRX-30
DC OPERATED
A
B
0.1 to 10 Seconds
0.6 to 60 Seconds
24 VDC
24 VDC
W388CPSRX-35
W388CPSRX-36
PART NUMBERS SHOWN ALSO AVAILABLE THRU STOCKING DISTRIBUTION.
SEE SECTION
10
FOR MATING SOCKETS
PAGE 124
WEBSITE: www.magnecraft.com EMAIL:info@magnecraft.com FAX ON DEMAND 1-800/891-2957, DOCUMENT 100
ETC [ ETC ]
