Overload Relay Series 8550
Art. No.:
283722
Product Type:
8550/1-OL-GLS3-E10-80-95-11
Product Description:
Overload protection
min. ambient temperature:
-25 °C
max. ambient temperature:
+60 °C
Class 1 Division / Zone:
Division 2 / Zone 1
Zone Filter:
2 G | Gb | Zone 13 G | Gc | Zone 23 G | Gc | Zone 2
Product variant:
with auxiliary contacts
Certificates:
ATEX (FM), Canada (FM), IECEx (FM), USA (FM)
Trigger class:
Class E10
Rated operational voltage:
690 V
Rated operational current:
20 - 80 A
Main contacts:
3-pole
Auxiliary contacts:
2 (1 NO + 1 NC)
Connection cross-section:
25 - 95 mm²
Connection cross section AWG:
4 to 4/0 AWG
Country of origin:
DE
On request
Technical data
General
| MY R. STAHL | 8550B |
| Product variant | with auxiliary contacts |
| Product Type | 8550/1-OL-GLS3-E10-80-95-11 |
| Highlights | Modular component for overload monitoring of motors up to 37 kW / 50 hp at 400/480 VThe electronic relay is sensitive to a fluctuating ambient temperatureLarge clamping range for main terminalsTripping class E5, E10, E20 and E30 can be selected via type codeIntegrated earth protectionGreater adjustment range of the overload trigger from 20 to 80 AIntegrated reset button and electronic reset via 24 V DC control |
| Functional Description | The electronic overload relay for R. STAHL's 8550 series is a component for load current monitoring of motors. It reliably reports an overload and safely shuts off the motor using a contactor. Together with the moulded case circuit breaker in the same series which is also available, these three components form a motor starter which reliably control powers up to 37 kW / 50 hp at 400 or 480 V (other powers available on request). Earth fault protection is also integrated, meaning that Ex d and Ex e motors are safely protected at all points. The broad adjustment range of the overload current optimises the variety of versions. Resetting in case of error is either done manually on the unit on-site via the integrated reset button, or electrically via the control system. |
Explosion Protection
Electrical Data
Ambient Conditions
Mechanical Data
Mounting / Installation
Commercial data
Downloads
| Description | Document Type | Language | |
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| Overload protection - 8550/1-OL-GLS3-E10-80-95-11 - 283722 - en-US | Single Data Sheet |
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| Overload Relay - 8550 - de-DE | Product Overview |
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| Overload Relay - 8550 - en-GB | Product Overview |
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| Overload Relay - 8550 - fr-FR | Product Overview |
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| Overload Relay - 8550 - es-ES | Product Overview |
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| Overload Relay - 8550 - en-US | Product Overview |
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| Overload protection - 8550/1-OL-GLS3-E10-80-95-11 - 283722 - de-DE | Single Data Sheet |
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| Overload protection - 8550/1-OL-GLS3-E10-80-95-11 - 283722 - en-GB | Single Data Sheet |
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| Overload protection - 8550/1-OL-GLS3-E10-80-95-11 - 283722 - fr-FR | Single Data Sheet |
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| Overload protection - 8550/1-OL-GLS3-E10-80-95-11 - 283722 - es-ES | Single Data Sheet |
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