818
PRODUCTS UNLIMITED
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
Features
• Single-pole, normally closed relay used extensively in HVAC applications.
• Variety of mounting positions and brackets.
• Convenient 0.250” (6.35 mm) quick connect terminals.
• Custom-built to meet customer requirements.
Users should thoroughly review the technical data before selecting a product part
number. It is recommended that users also seek out the pertinent approvals files of
the agencies/laboratories and review them to ensure the product meets the
requirements for a given application.
Contact Data @ 25°C
Arrangements: Normally-Closed.
Materials: Silver cadmium oxide.
Maximum Rating: 35A inductive @ 277VAC, 0.5 power factor (Break only.)
Expected Life: 750,000 ops, mechanical.
250,000 ops., breaking rated load.
Initial Dielectric Strength
Initial Breakdown Voltage: 1,554 VAC @ 60 Hz. between live parts and
exposed non-current carrying metal parts.
Coil Data @ 25°C
Voltage: 130, 170, 214, 256, 336, 395, 420 and 495 VAC, 60 Hz.
Nominal Sealed Power: 5 VA).
Insulation Class: UL Class B (130°C).
Duty Cycle: Continuous.
Mechanical Data
Termination: 0.250” (6.35 mm) quick connects (single or dual, model
dependent). Terminals #4 & #6 are dummies for customer
convenience.
Mounting Position: Each model is calibrated for its specified mounting
position. Pick-up voltage may vary if relay is mounted
in positions other than specified.
Weight: 5.76 oz. (163.8 g) approximately
38 series
Potential Motor Starting Relay
1-pole, 35A, Normally Closed
AC Coil
File E83865
Ordering Information
Typical Part No. B38 -A 144 C 3 000
1. Series:
38 = 1-pole, normally-closed, potential motor starting relay
2. Wiring and Terminal Type (number of QCs at given base locations):
A = 2 @ loc. 1, 2 @ loc. 2, 4 @ loc. 3, 2 @ loc. 5 and 2 @ loc. 6.
D = 2 @ loc. 1, 2 @ loc. 2, 4 @ loc. 3, 2 @ loc. 5 and 0 @ loc. 6.
M = 2 @ loc. 1, 2 @ loc. 2, 2 @ loc. 3, 2 @ loc. 5 and 0 @ loc. 6.
R = 1 @ loc. 1, 2 @ loc. 2, 0 @ loc. 3, 1 @ loc. 5 and 0 @ loc. 6.
S = 1 @ loc. 1, 2 @ loc. 2, 0 @ loc. 3, 2 @ loc. 5 and 0 @ loc. 6.
T = 2 @ loc. 1, 2 @ loc. 2, 0 @ loc. 3, 2 @ loc. 5 and 0 @ loc. 6.
Y = 1 @ loc. 1, 2 @ loc. 2, 4 @ loc. 3, 2 @ loc. 5 and 0 @ loc. 6.
3. Coil Rating and Calibration:
000-999 = See table on following page for details.
4. Mounting Bracket Style:
C, D, F or J = See drawings below for details.
5. Mounting Position:
1, 2, 3, 4, 5 & 6 = See drawings below for details. NOTE: Devices calibrated in specified mounting position only.
6. Customer ID Suffix:
000-999 = Factory assigned customer ID
CJ
F
D
#8-32
UNC-2B THD.
#8-32
UNC-2B THD.
1.59
(40.39)
1.00
(25.4)
.500
(12.7)
1.563
(39.7)
1 2 3 4 56
Custom parts only.
Standard part numbers listed below are more likely to be available from stock.
819
PRODUCTS UNLIMITED
Dimensions are shown for
reference purposes only.
Dimensions are in inches over
(millimeters) unless otherwise
specified.
Catalog 1308242
Issued 3-03
Specifications and availability
subject to change.
www.tycoelectronics.com
Technical support:
Refer to inside back cover.
Outline Dimensions
Select proper continuous coil voltage from top of appropriate column, select pick - up (PU) and drop-out (DO)
voltages and insert relay calibration (RC) number in part number.
COIL #1 COIL #2 COIL #3 COIL #4
130 V 60 Hz 170 V 60 Hz 256 V 60 Hz 336 V 60 Hz
117 V 50 Hz* 151 V 50 Hz* 228 V 50 Hz* 299 V 50 Hz*
RES.@ 1480+10% RES.@ 2040+10% RES.@ 5100+10% RES.@ 6800+10%
24°C 24°C 24°C 24°C
RC# PU DO RC# PU DO RC# PU DO RC# PU DO
1 2 159-172 20-77 3 240-269 45-95 4 243-271 55-125
8 9 10 259-288 45-95 11 261-290 55-125
15 16 17 278-306 45-115 18 280-309 55-125
22 23 24 296-325 45-115 25 299-327 55-125
29 30 31 315-343 45-115 32 317-345 55-125
36 37 38 323-352 45-115 39 326-354 55-125
43 44 45 333-363 45-115 46 335-364 55-125
50 51 52 285-305 MAX. 77 53 340-370 55-125
57 111-125 20-50 58 111-124 30-65 59 240-269 35-77 60 171-184 40-90
64 121-134 20-50 65 120-134 30-65 66 123-134 25-77 67 168-182 MAX. 90
71 130-143 20-55 72 130-144 30-65 73 74 180-195 40-90
78 139-153 20-55 79 140-153 30-65 80 136-150 45-90 81 219-253 40-115
85 149-163 20-55 86 149-163 30-65 87 150-163 45-90 88 152-166 55-115
92 93 159-172 30-65 94 159-172 45-90 95 162-175 55-115
99 100 168-182 30-65 101 168-182 45-95 102 171-184 55-115
106 107 178-192 30-75 108 178-192 45-95 109 180-193 55-115
113 114 139-153 MAX. 55 115 185-213 45-95 116 188-214 55-115
120 121 122 203-231 45-95 123 205-234 55-115
127 128 129 221-250 45-95 130 224-252 55-125
134 135 136 140-152 33-77 137 186-215 40-90
141 80-110 20-55 142 143 285-305 45-115 144 162-175 40-90
148 62-76 20-45 149 150 159-172 35-77 151 162-175 70-100
156 157 158 150-162 MAX. 77 159 243-271 40-90
163 164 165 136-150 MAX. 50 166 205-234 40-90
170 171 172 166-182 35-77 173 180-195 MAX.105
178 179 180 181 224-252 40-90
185 186 187 188 280-309 55-100
194 205-234 40-90
198 152-166 40-90
COIL #5 COIL #6 COIL #7 COIL #8
395 V 60 Hz 420 V 60 Hz 495 V 60 Hz 214 V 60 Hz
338 V 50 Hz* 378 V 50 Hz* 452 V 50 Hz* 193 V 50 Hz*
RES.@ 9600+10% RES.@ 12700+10% RES.@ 15200+10% RES.@ 2840+10%
24°C 24°C 24°C 24°C
RC# PU DO RC# PU DO RC# PU DO RC# PU DO
5 245-275 60-140 6 242-272 75-150 7 239-268 75-170 193 158-171 25-57
12 262-290 60-140 13 262-290 75-150 14 258-287 75-170 196 120-134 25-56
19 280-310 60-140 20 280-310 75-160 21 277-305 75-170 197 129-142 25-57
26 305-335 60-140 27 300-328 75-160 28 295-324 75-170
33 187-208 60-130 34 318-347 75-160 35 314-342 75-180
40 326-354 60-140 41 328-356 75-150 42 323-352 75-180
47 335-365 60-140 48 337-366 75-160 49 332-361 75-180
54 340-370 60-140 55 340-370 75-160 56 258-287 60-135
61 180-195 40-105 62 300-328 75-121 63
68 215-225 MAX.120 69 300-328 MAX.125 70 323-352 MAX.135
75 334-363 50-110 76 212-232 MAX.121 77 277-305 75-150
82 298-326 50-110 83 195-224 60-121 84 295-324 60-135
89 189-205 60-130 90 204-233 60-121 91 325-345 MAX.135
96 162-175 50-100 97 260-290 60-121 98
103 180-195 50-100 104 242-272 60-121 105
110 180-195 60-130 111 180-195 60-121 112 239-268 60-135
117 190-215 60-130 118 190-215 60-121 119 325-345 75-170
124 208-239 60-130 125 204-233 75-150 126 277-305 60-135
131 223-254 60-140 132 223-252 75-150 133
138 245-275 MAX.120 139 195-224 75-150 140
145 208-239 MAX.120 146 320-340 60-121 147
152 260-275 MAX.120 153 295-315 MAX.195 154
160 260-275 60-140 161 218-243 60-121 162
167 215-225 60-130 168 205-234 40-90 169
174 239-270 50-110 175 223-252 60-121 176
182 208-239 50-110 183 295-315 MAX.125 184
189 224-252 60-121 190 280-310 60-121 191
195 190-215 40-105 192 180-195 40-105
200 279-308 50-110
*For 50 Hz, add 300 to RC# - i.e. for 151 V 50 Hz, RC# 58 changes to 358.
Coil Rating & Calibration Table
1.82
(46.2)
1.82
(46.2)
2.03
(51.6)
2.065
(52.45)
.250
(6.35)
.156
(3.96)
1.59
(40.4)
