Littelfuse ER-5WP User Manual

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VO L TA G E O N T H IS S U R F AC E R I S ES

TO L I N E- T O - NE U T R AL V O L T AG E

WH E N A G RO U N D F AU L T O C CU R S

N

C AU T I ON

H IG H V O LT A G E

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!

E R - 5 W P

SE NS IN G RE SI TO RS

20 K

:

25 00 VA C MA X

RATINGS:

MAXIMUM VOLTAGE
MAXIMUM CURRENT

RESISTANCE
THERMAL

CONTINUOUS

20 k:

125 mA

2,500 Vac

105.0

(4.13)

52.5

(2.07)

7.9
(0.31)

12.0

(0.47)

21.0

(0.83)

381.0

(15.00)

ALTERNATE NEUTRAL CONNECTION

NEUTRAL CONNECTION

0.25-20 UNC
THREADED
INSERT

10-32 THREADED
INSERT

TOP VIEW

316.0

(12.44)

0.25-20 UNC STUD

188.0

(7.40)

FRONT VIEW

NOTE 2

SIDE VIEW

MINIMUM DISTANCE
TO ADJACENT OBJECTS

NOTE 3

MINIMUM CLEARANCE FROM BASE

254.0 (10.00)

127.0

(5.00)

254.0
(10.00)

355.6

(14.00)

457.0

(18.00)

50.7

(2.00)

MOUNTING DETAIL

NOTES:

1. DIMENSIONS IN MILLIMETRES (INCHES).

2. TERMINAL-BLOCK SCREWS: 6-32 x 0.25.

3. MOUNTING SCREWS: M6 OR 0.25-20.

4. THIS DEVICE CAN DISSIPATE
300 WATTS. TO MINIMIZE SURFACE
TEMPERATURES FOR SYSTEMS
ALLOWED TO OPERATE
CONTINUOUSLY WITH A GROUND
FAULT, MOUNT VERTICALLY WITH
R & G TERMINALS DOWN.

Revision:

Rating:

2,500!Vac!!50/60!Hz

125!mA!Max

20!K

Duty!Cycle:

ER*5WP

SENSING2RESISTOR

Serial2No:

1@800@TEC@FUSE!(1@800@832@3873)
Made!in!Saskatoon,!Canada

Usewith:

Neutral!Grounding!Resistor!Monitor

Models!SE@325!and!SE@330

Continuous

R