MDR-138-8 datasheet, PDF - EEWORLD Datasheet

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MDR-138-8: Descriptiongeneral purpose relays mdr; CategoryTopical application Mechanical and electrical/engineering/automation; File Size115KB，2 Pages; ManufacturerAll Sensors

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MDR-138-8 Overview

general purpose relays mdr

MDR-138-8 Parametric

Parameter Name	Attribute value
Manufacture	TE Connectivity
Product Category	General Purpose Relays
Produc	Rotary Relays
Type	Vibration Resis
Termination Style	Screw
Mounting Style	Panel
Contact Form	8PDT (8 Form C)
Coil Type	Non-Latching
Coil Terminati	Screw
Mounting Type	Flange

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MDR

series

10 Amp Rotary Relay

For Demanding Shock &

Vibration Applications

Small 4PDT

Medium 24PDT

Features

• AC and DC coils, latching and non-latching.

• 4PDT through 24PDT contact arrangements.

• Contacts will not chatter when relays are subjected to high-impact shock

blows of 2000 ft.-lbs.

Operate Data @ 25°C

Type

Small AC Non-Latching

Small DC Non-Latching

Small AC Latching

Small DC Latching

Medium AC Non-Latching

Medium DC Non-Latching

Medium AC Latching

Medium DC Latching

Typ. Operate Time (ms) Typ. Release Time (ms)

5 to 12

5 to 18

15 to 30

5 to 15

6 to 12

N/A

10 to 16

N/A

6 to 12

6 to 20

65 to 90

10 to 30

8 to 14

N/A

30 to 80

N/A

Contact Data

Arrangements:

4 Form C (4PDT) through 24 Form C (24PDT).

Contact Ratings

Single Contacts

10A, 115VAC

3A, 28VDC

0.8A, 125VDC

Two Contacts in Series

3A, 440VAC

15A, 115VAC

1.5A, 125VDC

Latching Two-Position Types:

Except for the latching feature, MDR

latching relays utilize the same general construction as non-latching types.

They have two sets of coils and provide a latching two-position operation.

Contacts Shown With

Coil 1-2 De-Energized and

Coil 3-4 Energized.

Coil

The above AC contact ratings are based on contact loads having a 50% power factor. The DC

contact ratings are based on resistive loads.

Coil

Contact Section

Coils Must be Energized Alternately,

Not Simultaneously

Environmental Data

Temperature Range: Standard models:

0°C to +65°C.

Special order models:

0°C to +90°C.

FIXED

CONTACT

Mechanical Data

Termination:

#5-40 screw terminals supplied.

Weight (Approx.):

Small –

4 & 8PDT: 32 oz. (0.914 kg); 12PDT: 33 oz. (0.943 kg).

Medium –

16PDT: 72 oz. (2.04 kg); 24PDT: 74 oz. (2.10 kg).

Ordering Information and Coil Characteristics – No models in this series are maintained in stock.

Type

Small

Non -

Latching

Part Number

MDR-131-1

MDR-131-2

MDR-135-1

MDR-137-8

MDR-134-1

MDR-134-2

MDR-136-1

MDR-138-8

MDR-163-1

MDR-163-2

MDR-170-1

MDR-170-2

MDR-172-1

MDR-173-1

MDR-141-1

MDR-141-2

MDR-167-1

MDR-142-1

MDR-67-2

MDR-4091

MDR-67-3

MDR-5060

MDR-4076

MDR-4092

MDR-5035

MDR-5061

MDR-6064

MDR-6065

MDR-7020

MDR-7035

MDR-66-4

MDR-6066

MDR-7025

MDR-7036

Contacts

4PDT

8PDT

12PDT

16PDT

24PDT

4PDT

8PDT

12PDT

16PDT

Coil Voltage

(60 Hz. for AC)

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

115VAC

440VAC

28VDC

125VDC

Coil Current

(Amps)

0.215

0.045

0.362

0.082

0.215

0.045

0.362

0.082

0.230

0.055

0.620

0.160

0.667

0.125

0.620

0.160

0.667

0.125

0.150

0.020

0.778

0.164

0.150

0.020

0.778

0.164

0.380

0.055

0.316

0.083

0.380

0.055

0.316

0.083

DC Coil

Resistance (Ohms)

1,256

1,520

1,256

1,520

940

8.4

107

1,024

8.4

107

1,024

210

4,500

760

210

4,500

760

540

88.6

1,500

540

88.6

1,500

Coil Power*

(Watts)

6.5

5.1

10.0

10.3

6.5

5.1

10.0

10.3

6.9

6.3

17.0

18.7

16.0

17.0

18.7

16.0

5.5

3.0

21.8

20.6

5.5

3.0

21.8

20.6

12.0

5.7

8.8

10.4

12.0

5.7

8.8

10.4

Breakdown

(Volts RMS)

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

1,230

1,880

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

1,230

1,880

1,308

2,375

Medium

Non -

Latching

Small

Latching

Medium

Latching

* Actual Wattmeter readings

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