Read 4BRSnap-action MicroswitchesStandard Metal text version

4BR

Snap-action Microswitches

Standard Metal

4BR

Characteristics

Choice of IP54 or IP67 sealed versions Precise movements and exceptional repeat accuracy Robust metal housing

Rating Up to 250 VAC, 15 A Dimensions (mm) 53,1 i 20,6 i 29,2 Actuator Plunger Approvals UL, CSA

Preferred Range

Ordering Reference Actuating Force (N) (ozf) Sealing Operating pos. (mm) (in) Terminal Circuit Actuator Contacts Electrical rating

4BR 7,2 4BR510 7,2

26,00 26,00

IP54 IP67

39,3 39,3

1,550 1,550

Screw Screw

CO CO

Plunger Plunger

Silver Silver

Up to 250 VAC, 15 A Up to 250 VAC, 15 A

80 | 81

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4BR

Specifications

Housing Base Plate Plunger Cowl Mechanism Contacts Terminals Temperature Mechanical life Protection Mounting

Circuit diagram

2B NORMALLY CLOSED

Zinc based alloy Phenolic Stainless steel Silicon rubber Single pole change-over Silver Removable screw terminals, insulated cover plate ­10°C to +85°C 106 cycles minimum (impact free actuation) 4BR/510 IP67 (NEMA type 6) except terminals / 4BR IP54 (NEMA type 4) Side mounting

COMMON

1A

4C

NORMALLY OPEN

Dimensions

Ø8.0 [0.31]

OPERATING POSITION

FREE POSITION

2 MOUNTING HOLES +0.05 Ø3.66-0.00 [0.14]

BURGESS

11.4 MAX [0.45]

25.4±0.05 [1.0]

4 C 1 A B 2

6BA TERMINAL SCREWS WITH CAPTIVE WASHERS

53.1 MAX [2.09] VIEW WITH COVER REMOVED

Recommended maximum electrical ratings

Voltage (max) Resistive load (A) Inductive load Horsepower Approval

250 VAC 125 VAC 250 VAC 125 VAC 0 - 15 VDC 15 - 30 VDC

15 (0.75 pf) 10 (0.75 pf) 10 5

5 -

1 /4 HP (0.45 pf) 1 /8 HP (0.45 pf) -

20.6 MAX [0.81]

17.8 MAX [0.7]

CSA 22.2 No. 55 - 6,000 operations CSA 22.2 No. 55 - 6,000 operations CSA 22.2 No. 55 - 6,000 operations CSA 22.2 No. 55 - 6,000 operations General rating - 50,000 operations General rating - 50,000 operations

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80 | 81

4BR

Operating Characteristics

Actuator Reference Actuating Force Maximum (N) (ozf) Release Force Minimum (N) (ozf) Free Position Maximum (mm) (in) Operating Position (mm) (in) Movement Differential Maximum (mm) (in) Over travel (mm) (in)

Plunger

4BR 4BR/510

7,2 7,2

26,00 26,00

1,7 1,7

6 6

40,8 40,8

1,6 1,6

39,3 ± 0.4 1,55 ± 0.016 39,3 ± 0.4 1,55 ± 0.016

0,08 0,08

0,003 0,003

4,6 4,6

0,18 0,18

Ordering Reference

Type 4BR Environmental No digit sealing 510

Mechanism sealed to IP54 (NEMA type 4) Mechanism sealed to IP67 (NEMA type 6)

82 | 83

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Information

4BRSnap-action MicroswitchesStandard Metal

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