7PG1521-4FB30-1CF0/BB Siemens - Siemens Reyrolle Type TR212 High Burden Tripping Relay 7PG1521-4FB30-1CF0/BB | Banafa Automation
Part Number: 7PG1521-4FB30-1CF0/BB | Brand: Siemens | Category: Power Supplies & Relays
1. SIEMENS REYROLLE 7PG112 AUXILIARY RELAY SERIES
* Product Family: Reyrolle Type AR Electromechanical Auxiliary Relay
* Primary Function: Auxiliary contact multiplication, high-speed switching, and status indication in power systems and substations.
* Standards: Conforms to BS142, IEC 60255, and 2012/19/EU WEEE compliance.
* Rated Voltages (Un):
* AC Options: 63.5V, 110V, 220V, 240V
* DC Options: 12V, 24V, 30V, 50V, 125V, 240V
* Operating Range: AC (80% to 110% of rated voltage); DC (70% to 115% of rated voltage).
* Burden: 3W to 5W/VA depending on coil rating.
* Contact Breaking Capacity (<= 5A and <= 250V):
* AC Resistive: 1250 VA
* DC Resistive: 100 W
* DC Inductive: 50 W (at L/R = 40ms)
* Performance: Operating time typically 25ms; mechanical durability exceeds 10,000 operations.
* Environmental: Operating temperature -10 °C to +55 °C; storage temperature -25 °C to +70 °C.
2. SIEMENS REYROLLE 7PG1123 (AR231 SERIES)
* Model Type: Multi-element auxiliary relay with electrical reset contacts.
* Enclosure: Modular draw-out case for flush panel mounting, E4 size (4U high profile).
* Terminals: Rear M4 screw terminals for ring-type crimp lugs.
* Reset & Indication: Electrical reset contacts paired with an internal mechanical target flag for status annunciation.
3. SIEMENS REYROLLE 7PG1531 HIGH BURDEN TRIPPING RELAY (TR3 SERIES)
* Primary Function: High-security protection tripping relay that introduces a high electrical burden to trip circuits to prevent spurious operations from induced AC voltages, ground potential rises, or capacitive discharge.
* Rated Control Voltage: Available across standard DC ranges (24V, 30V, 48V, 110V, 125V, 250V DC).
* Operating Range: 80% to 120% of rated DC control voltage.
* Features: High-speed attracted armature mechanism (< 10ms to 20ms operating time), hand or self reset options, target flags, and economy cut-off contacts to protect operating coils.
* Enclosure: Draw-out panel mounting case with rear M4 terminals.
4. SIEMENS REYROLLE 7PG1753 (XR350 TRIP CIRCUIT SUPERVISION RELAY)
* Element Configuration: Three-element relay engineered to continuously supervise the integrity of circuit breaker trip coils.
* Contact Arrangement: 2 Normally Open (NO) / 2 Normally Closed (NC) contacts (4 contacts total).
* Reset Mechanism: Self-reset contacts with a self-reset mechanical target flag.
* Rated Voltage: 125V DC (both control and alarm ratings).
* Enclosure: E3 case size (4U high profile, draw-out enclosure).
5. SIEMENS REYROLLE 7PG1521 HIGH BURDEN TRIPPING RELAY (TR212 SERIES)
* Primary Function: High-burden tripping relay for high-voltage electricity transmission and substation protection schemes.
* Contact Arrangement: Heavy-duty multi-contact sets (supporting up to 5NO/5NC or 6NO variants).
* Breaking Capacity: Heavy-duty DC inductive breaking up to 5A at 250V DC (at L/R = 40ms).
* Construction: Modular draw-out case (E2 or E4 sizes) designed for flush panel mounting with rear M4 screw terminals.
Warehouse Status: 3 units verified in Bhavnagar warehouse stock. Standard commercial GST invoice & same-day priority dispatch across India.
Browse Complete Industrial Automation Catalog | Request Instant RFQ Quote
