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

Potential Motor Starting Relay

1-pole, 35A, Normally Closed

AC Coil

File E83865

Ordering Information

Typical Part No.

B

38

-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

C

J

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

5

6

Custom parts only.

Standard part numbers listed below are more likely to be available from stock.