A258BM Time Mark Corporation, A258BM Datasheet

A258BM

Manufacturer Part Number

A258BM

Description

Relay; SSR; Phase Monitor; SPDT; Cur-Rtg 10A; Ctrl-V 480AC; Vol-Rtg 240AC; Socket Mnt

Manufacturer

Time Mark Corporation

Datasheet

1.A258B.pdf (1 pages)

Specifications of A258BM

Contact Form

SPDT

Current, Rating

10 A

Function

Phase Monitor

Mounting Type

Socket

Number Of Pins

Relay Type

Solid State

Standards

UL, CSA

Termination

Plug-In

Voltage, Control

480 VAC

Voltage, Rating

240 VAC

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DESCRIPTION

The Model 258 continuously monitors 3-phase power

lines for abnormal conditions. When properly ad-

justed, the Model 258 Monitor will detect phase loss

on a loaded motor even when regenerated voltage is

present.

This device consists of a solid-state voltage and

phase-angle sensing circuit, driving an electro-

mechanical relay. When correct voltage and phase

rotation are applied, the internal relay will energize.

A fault condition will de-energize the relay. When the

fault is corrected, the monitor will automatically reset

(a manual reset version is also available).

The Model 258 3-Phase Monitor does not require a

neutral connection and can be used with Wye or

Delta systems. Voltage ranges are sufficiently wide

to allow for proper adjustment to existing conditions.

Both “TRIP” and “NORM” condition indicators are

provided to aid in adjustment and system trouble-

shooting.

TYPICAL APPLICATION

Detects phase loss, low voltage, phase reversal

50 Hz, 60 Hz and 400 Hz models

Automatic or manual reset

Five year unconditional warranty

3-Phase Monitor

MODEL 258

SPECIFICATIONS

AUTO Reset

MANUAL Reset

Nominal AC voltage

(phase to phase)

Case Color

Adjustment range

Frequency

Pwr consumption

Transient protection

Repeat accuracy

Response time

Dead band

Output contacts

Expected relay life

Operating temp.

Humidity tolerance

Enclosure material

Mounting

Weight

Agency approvals

DIMENSIONS

85-120 vac 160-240 vac 380-480 vac 300-400 vac 85-120 vac

B258BM

120 vac

B258B

0.75W

60 Hz

Gray

*condition of acceptability: the 380V and 480V versions

208/240 vac

must be used with a UL Recognized 600 VAC socket

258BM

258B

60 Hz

1.5W

Red

Mechanical: 10 million operations

Electrical:

SPDT 10 amps at 240 VAC resistive

± 0.1% of set point (fixed conditions)

UL Recognized* and CSA Certified

8-pin socket ( **sold separately)

0 - 97% w/o condensation

Dust cover: ABS plastic

A258BM

480 vac

A258B

50 msec (set or reset)

Yellow

60 Hz

4.5W

2500 VAC for 10 ms

-40° to +131° F

100,000 operations at rated load

Approx. 2%

5 oz.

EX258BM

EX258B

380 vac

Yellow

3.75W

50 Hz

** Order 8-pin socket number 51X120

B258BM-400

B258B-400

120 vac

400 Hz

0.75W

Gray

160-240 vac

208/240 vac

258BM-400

258B-400

400 Hz

1.5W

Red

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